Musty smell in the refrigerator: reasons and 10 ways to remove it forever

A musty smell from the refrigerator is a problem that almost every owner faces. It appears suddenly, penetrates into food and spoils your appetite, and getting rid of it is sometimes more difficult than it seems. The reasons can be different: from banal stale food to hidden mold in the seal or drainage hole. But the good news is you can remove the smell yourselfwithout resorting to the expensive services of specialists.

In this article we will analyze all possible sources unpleasant odors, from rotten foods to technical faults, and give step-by-step instructions to fix the problem. You will learn which household products work better than store-bought ones, how to properly clean the refrigerator so that the smell does not return, and what to do if it persists even after general cleaning. And also - a list of mistakes that 90% of users make when cleaning, aggravating the situation.

Why a musty smell appears in the refrigerator: 7 main reasons

Before dealing with the consequences, you need to find the root of the problem. A musty smell rarely occurs on its own; it is usually preceded by one or more reasons:

• 🍎 Expired products. Even one spoiled yogurt or piece of meat can become a source of odor that is absorbed into plastic and rubber parts.
• 🧽 Untimely cleaning. Crumbs, spilled liquids and greasy stains on shelves are an ideal environment for bacteria.
• 💧 Clogged drainage hole. Water accumulates at the bottom of the chamber, begins to rot, and the smell spreads throughout the refrigerator.
• 🧼 Improper detergents. Aggressive chemistry (for example, bleach) can react with plastic, leaving a persistent “chemical” odor.
• 🔌 Seal failure. A worn seal allows warm air to pass through, causing food to deteriorate faster.
• ❄️ Excessive icing. Ice in the freezer or on the back wall (in models with a drip system) may melt with an unpleasant odor.
• 🍄 Hidden mold. Most often, it is hidden under rubber gaskets, in the gap between the shelves or on the back wall.

It is interesting that in NoFrost refrigerators odor appears less frequently thanks to the dry freezing system, but they are not immune to the problem if the operating rules are violated. But in models with drip defrosting (for example, Atlant or Biryusa) the risk is higher due to constant humidity.

⚠️ Attention: If the smell appears suddenly and is accompanied atypical noise (humming, crackling) or increased temperature in the chamber, the problem may be compressor malfunctions or a freon leak. In this case, self-cleaning will not help - repair is needed.

Preparing the refrigerator for cleaning: 5 required steps

Before eliminating the smell, the refrigerator must be properly prepared. If you skip at least one of these steps, you risk wasting your time - the smell may remain or return in a couple of days.

1. Disconnect from the network. Pull out the plug from the socket to avoid short circuit when washing. In models with electronically controlled (for example, Samsung RB30J3000), it is better to leave the door open for 10-15 minutes so that the condensation evaporates.
2. Take out all the products. Check expiration dates and throw away anything suspicious. Products in airtight containers (glass, silicone) can be left on the table, the rest is best put in a cooler bag or wrapped in a towel.
3. Remove all removable elements. Remove shelves, drawers, grilles and door compartments and wash separately. In some models (for example LG DoorCooling+), the shelves have special grooves - carefully pull them towards you and up.
4. Remove the water collection tray. It is located under the bottom shelf or behind the rear wall (depending on the model). This is where dirt and bacteria often accumulate.
5. Check the seal. Wash the rubber gasket on the door with soapy water and inspect for cracks. If it is deformed, the smell will return.

If your refrigerator has ionization system (for example, in Panasonic NR-BN), before cleaning, turn it off through the menu or the button on the panel. Otherwise, the detergent may damage the ionizer.

Unplug and let stand for 10 minutes|

Take out all products and check expiration dates|

Remove shelves, drawers and food tray water|

Wash the seal with soapy water|

Turn off the ionization system (if equipped)-->

Top 5 folk remedies for eliminating musty odor

Do not rush to buy expensive chemicals - often deal with the smell is helped by the means available in any kitchen. They are safe for health, do not leave toxic traces and are suitable for refrigerators of all brands, including Indesit, Beko and Liebherr.

To enhance the effect, you can combine means. For example, first wash the refrigerator vinegar solution, then wipe soda, and at the final stage put on the shelf lemon peels or charcoal.

Professional odor absorbers: what to choose and how use

If traditional methods do not help, you should pay attention to specialized tools. They come in three types:

• 🧴 Gels and sprays (for example, Top House, Unicum). They are applied to surfaces, neutralize odors and form a protective film. Suitable for prevention after cleaning.
• 📦 Ammonia and hydrogen sulfide absorbers-containers (for example, Bork K700, Polair). Installed on a shelf, work for 1–3 months. Effective against ammonia and hydrogen sulfide the main sources of mustiness.
• 🔋 Ultraviolet ionizers (for example, Xiaomi Viomi). Kill bacteria and viruses, eliminate odors at the molecular level. Suitable for refrigerators with NoFrost system.

When choosing, pay attention to:

• Validity period (from 1 month to a year).
• Type refrigerator (not all products are suitable for Side-by-Side or two-chamber models).
• The presence of flavors (if you do not need the smell of lavender or citrus, take neutral options).

One of the most effective professional solutions is ozonators. They produce ozone, which destroys odor molecules and disinfects the chamber. For example, ozone generator AirComfort copes with mustiness in 20–30 minutes. But it must be used strictly according to the instructions: ozone in high concentrations is harmful to humans.

⚠️ Attention: Some absorbers (especially those based on zeolite) lose effectiveness at high humidity. If condensation often forms in your refrigerator, choose products with silica gel or activated carbon.

How to clean the drainage hole: step by step instructions

A clogged drainage hole is one of the main causes of a musty smell. The water does not go into the tray, it stagnates and begins to rot. You can clean it yourself without disassembling the refrigerator.

You will need:

• Cotton swabs or thin wire.
• A syringe or syringe with warm water.
• Soap solution or detergent dishes.

Step 1. Find the hole. In most models (for example, Samsung RL38 or Bosch KGN39) it is located on the back wall above the water tray. In some refrigerators (for example Whirlpool) it may be hidden under the bottom shelf.

Step 2. Carefully clean the hole with a cotton swab dipped in a soapy solution. If the blockage is deep, use a wire, but without sudden movements, so as not to damage the tube.

Step 3. Rinse the drainage with a syringe with warm water. Direct the jet under pressure to wash away any remaining dirt. Repeat 2-3 times.

Step 4. Check if the water is leaving. Pour some liquid into the hole - it should flow freely into the tray. If not, repeat cleaning.

In refrigerators with NoFrost system the drainage hole may be located behind the back panel. To access it, sometimes you need to remove the protective cover (carefully pry it off with a flat screwdriver).

What to do if the water does not drain after cleaning?

If flushing does not help, the blockage may be in the drain tube that goes to the compressor. In this case:

1. Unplug the refrigerator and move it away from the wall.

2. Find a tube (usually black or gray) going down from the drainage hole.

3. Disconnect it from the compressor and clean it with a wire or rinse it under pressure of water.

4. Return the tube to its place and check the drain.

If this does not help, the tube may be deformed and will need replacement.

Cleaning the seal and hidden areas: where the most dirt accumulates

The rubber seal on the door is a breeding ground for bacteria. Crumbs, grease and moisture get there, and it is difficult to wash this place due to the textured surface. In addition, the smell can come from slots between the shelves, ventilation grates (in models with NoFrost) or back wallif mold has accumulated there.

How to clean the seal:

1. Prepare a solution: 1 liter of warm water + 2 tbsp. l. soda + 1 tbsp. l. vinegar.
2. Use a toothbrush or cotton swab to go through all the folds of the rubber. Pay attention to the corners - this is where the most dirt accumulates.
3. Wipe with a clean damp cloth, then dry with a paper towel.
4. Apply a thin layer silicone grease (sold in car dealerships) - this will prevent cracking and extend service life seal.

Hidden areas that are often forgotten to wash:

• 🔍 The cracks under the plastic covers (for example, in Samsung refrigerators with a display on the door). Remove the cover, wipe the space under it.
• 🔍 Ventilation holes in the upper part of the chamber (in models with NoFrost). Dust and grease clog them, impairing air circulation.
• 🔍 The space behind the fruit boxes. Condensation and mold often accumulate there.
• 🔍 Door hinges. Grease and dirt get into them, and they are cleaned every few years.

You can use hydrogen peroxide (3%)to disinfect hidden areas. It kills mold and bacteria without leaving an odor. Apply it for 5-10 minutes, then rinse with clean water.

What to do if the smell remains: radical methods

If after general cleaning a musty smell is still felt, the problem may be deeper:

• 🦠 Mold inside the insulating layer (more common in old refrigerators or after improper defrosting).
• 🔧 Malfunction of the defrosting system (for example, a broken evaporator heater in NoFrost).
• 🧊 Condenser contamination (dust and grease on the rear grill can cause overheating and unpleasant smell).

Radical solutions:

1. Deep disinfection with steam. Use a steam generator (for example Karcher SC 2) Treat all surfaces with hot steam - it kills bacteria and mold spores. wipe the refrigerator dry.
2. Ozone treatment. Buy or rent an ozonizer (for example, AirComfort O3-800). Place the device inside the refrigerator, turn it on for 15-20 minutes, then ventilate the chamber for an hour.
3. Replacing the insulation. If mold has penetrated the foam layer between the walls, you will have to disassemble the refrigerator and replace the insulation. This is a complex procedure - it is better to entrust it to a specialist.
4. Cleaning the condenserUnplug the refrigerator, move it away from the wall and vacuum the rear grill. Remove heavy dirt with a brush. This will improve heat transfer and eliminate the burning smell.

If none of the methods helped, there may be a problem with compressor malfunctions or a refrigerant leak. In this case, the refrigerator will not only smell bad, but also weak. cool. Contact a service center - independent repairs may worsen the damage.

⚠️ Attention: When treating with ozone you cannot stay in the room - the gas is toxic after the procedure, ventilate the kitchen for at least 1 hour and wipe all surfaces of the refrigerator with a damp cloth. with a rag.

Prevention: how to prevent the smell from appearing in the future

To prevent the musty smell from returning, just follow simple rules:

• 📅 Regular cleaning. Wash the refrigerator every 1-2 months (more often in hot weather). Use mild detergents (for example, Ecover or Frosch).
• 🥩 Proper storage of food. Keep meats, fish and cheeses. in sealed containers. Fruits and vegetables - in special boxes with controlled humidity.
• 🧊 Humidity control. If condensation accumulates in the refrigerator, check the seal and defrosting system. In models with NoFrost humidity should not be higher than 50%.
• 🌿 Natural absorbers. Keep a pack of soda, citrus peels or a bag of rice on the shelf - they absorb excess moisture and odors.
• 🔄 Proper defrostingDo not chip the ice with a knife - this can damage it. evaporator. Use defrost mode or turn off the refrigerator in advance, allowing the ice to thaw naturally.

If your refrigerator is equipped antibacterial coating (for example, LG InstaView s BioShield), do not use abrasive detergents - they destroy the protective layer. It is enough to wash the surfaces with a soft sponge and soapy water.

For models with freshness zone (for example Samsung Twin Cooling Plus), monitor the temperature in the "zero chamber" - it should be strictly 0°C. If there are deviations, the products spoil faster and an odor appears.

FAQ: Answers to frequently asked questions

Can I use bleach to clean the refrigerator?

No, bleach (bleach) can damage plastic and rubber parts, and also leave a toxic odor that will be absorbed into food. For disinfection, it is better to use hydrogen peroxide or vinegar.

Why did the smell become even stronger after washing?

This happens if:

• You used scented detergent (for example, with the smell of lavender), which was mixed with mustiness.
• Did not wash the refrigerator clean water after washing, and the particles of the product reacted with the plastic.
• Did not dry the chamber - moisture became the source of a new smell.

Solution: rinse the refrigerator again plain water, dry and place on the shelf activated carbon for a day.

How to remove the smell of fish or onions that has been absorbed into plastic?

Pungent odors are more difficult to remove, but will help:

1. Wipe the surfaces with a solution of vinegar and lemon juice (1:1).
2. Put on a shelf ground coffee or tea sachets for 12-24 hours.
3. Use absorber with zeolite (for example, Polair PC-01).

If the smell remains, repeat the treatment every other day.

Do I need to wash a new refrigerator before first use?

Yes, required! At the factory and during transportation, dust, oils and technical odors may remain inside. Just wipe all surfaces with a soft cloth. soap solution and let it air for 1-2 hours.

Do refrigerator fragrances help?

Flavors (for example, Air Wick or Glade) only mask odor, but do not eliminate its cause. Moreover, they do not eliminate the cause. may react with products, giving them a chemical taste. It is better to use natural absorbers (soda, coal) or professional products based on zeolite.