The smell from the refrigerator: how to get rid of it with soda - step by step guide

An unpleasant smell in the refrigerator is a problem that almost everyone faces. Even with regular cleaning and proper storage of products, persistent “aromas” may appear over time, which permeate the plastic, rubber seals and internal surfaces. Soda (sodium bicarbonate) is one of the most accessible and effective means to combat this nuisance, but few people know how to use it correctly.

Unlike chemicals fresheners, soda does not mask odors, but neutralizes them at the molecular level. It is safe for food, does not leave toxic residues and is even suitable for refrigerators with No Frostsystem. However, there are nuances: improper use can lead to stains on surfaces or even worsen the problem. This article contains a detailed analysis of all the ways to use soda, including little-known lifehacks and common mistakes that 90% of users make a detailed analysis of all the ways to use soda, including little-known life hacks and typical mistakes that 90% of users make.

Why is soda effective against odors in the refrigerator?

Sodium bicarbonate (baking soda) works like a natural one adsorbent —it absorbs and neutralizes molecules of volatile organic compounds, which are a source of unpleasant odors. Unlike activated carbon, soda not only absorbs, but also chemically decomposes many compounds, for example:

• 🍳 Fatty acids - residues from fish, meat, fried foods.
• 🧀 Ammonia and hydrogen sulfide - are released when dairy products spoil, eggs.
• 🍎 Ethyl alcohol and ethers —are formed during the fermentation of fruits and vegetables.
• 🧪 Volatile amines —the source is seafood, cheeses, sausages.

The effectiveness of soda has been proven by research: according to Journal of Food Science, sodium bicarbonate solution reduces the concentration of odor molecules by 70–90% after 12 hours. At the same time, soda does not just mask the smell (like flavorings), but eliminates its cause.

It is important to understand that soda will not cope with mold or bacterial plaque - this requires antiseptics (vinegar, hydrogen peroxide). But in combination with mechanical cleaning, it becomes an ideal solution for the prevention and elimination of “fresh” odors.

Preparing the refrigerator before treating with soda

Before using soda, the refrigerator must be properly prepared. Skipping this step is the main reason why the method “doesn’t work” for many people. Here's what you need to do:

1. Unplug the refrigerator and get all the products. If the model has a function Holiday Mode or Ecoactivate it - this will speed up ventilation.
2. Remove all shelves, containers, and grilles. They need to be washed separately in warm water and soda (recipe below).
3. Wipe the internal surfaces with a dry cloth to remove condensation. Humidity reduces the effectiveness of soda.
4. Check drainage hole (usually located on the back wall). If it is clogged, the smell will return. Clean it with a cotton swab or a special brush.

Remove all products|Remove shelves and containers|Wipe the walls dry|Check the drainage hole|Unplug (if possible)-->

Pay special attention rubber door seal —this is where most bacteria and mold accumulate. It can be cleaned with a toothbrush dipped in soda solution (1 tablespoon per 200 ml of water).

⚠️ Attention: Do not use abrasive sponges or metal scrapers - they will damage the coating of the refrigerator. For stubborn stains, it is better to use a plastic spatula or silicone spatula.

3 ways to use soda to eliminate odor

There are several proven methods for using soda. The choice depends on the degree of “neglect” of the problem and the type of refrigerator (with No Frost or drip system).

1. Dry soda in an open container (for prevention)

This is the simplest method that is suitable for regular care. Take a small container (such as a shot glass or plastic container) and pour 2-3 tablespoons of baking soda into it. Place on the middle shelf of the refrigerator. Soda will absorb odors for 1-2 months, after which it needs to be replaced.

To enhance the effect, you can add soda 5-6 drops of essential oil (lemon, lavender, tea tree). This will not only improve the aroma, but also have a slight antibacterial effect.

2. Soda solution for washing surfaces

If the smell has already ingrained itself in the plastic, deep cleaning will be needed. Prepare the solution:

2 tbsp. spoons of soda
1 liter of warm water (not hot!)
1 teaspoon of liquid soap (optional)

Dip a soft sponge in the solution and thoroughly wipe all surfaces, including the seal. For hard-to-reach places, use cotton swabs. After processing, wipe the refrigerator with a clean damp cloth, then dry.

3. Soda + vinegar for persistent odors

If regular soda does not help, try the “reactive” method:

1. Make a paste of baking soda and water (the consistency of toothpaste).
2. Apply it to problem areas (for example, fish stains or mold in corners).
3. Sprinkle vinegar on top (do not overdo it - 1-2 sprays).
4. Wait 5-10 minutes for the reaction to pass (it will hiss), then rinse with clean water.

This method is only suitable for smooth surfaces (not for aluminum or painted parts).

Mistakes that negate the effect of soda

Many complain that soda “doesn’t work,” although in fact they are simply making typical mistakes. Here's what not to do:

• 🧂 Use expired baking soda. Sodium bicarbonate loses its properties over time, especially if stored in a damp place. Check the expiration date on the packaging.
• 💦 Apply baking soda to wet surfaces. Moisture blocks adsorption - always wipe the refrigerator dry before handling.
• 🧽 Mix soda with chlorine-containing products. This causes a toxic reaction with the release of gas. For disinfection, it is better to use hydrogen peroxide.
• ❄️ Close the refrigerator immediately after cleaning. Let it ventilate for 1-2 hours, otherwise the smell will remain “locked” inside.

Another common mistake is use too much soda. Excess powder can leave white streaks on dark surfaces (for example, in refrigerators Samsung with a black coating SpaceMax). Optimal dosage: 1–2 tbsp. spoons per 1 liter of water.

How to remove the smell from the freezer?

The freezer is a different story. Here, soda is also effective, but there are nuances:

1. Thaw the chamber completely. Ice and frost “preserve” odors, so cleaning on ice is useless. In models with No Frost it is enough to turn off the power for 1-2 hours.
2. Prepare concentrated soda solution (3 tablespoons per 500 ml of water) and wipe all surfaces, including sealant.
3. For persistent odors (for example, from fish), place a bowl of soda mixed with activated carbon (1:1) in the chamber for 12 hours.
4. After treatment, turn on the refrigerator and let it run empty for 3-4 hours, so that the smell disappears.

In freezers with Low Frost or Frost Free cleaning should be carried out once every 3-4 months, even if there is no visible dirt. These systems reduce icing but do not prevent the build-up of odors.

⚠️ Attention: Do not use metal objects to clean the freezer - they can damage the cooling tubes. For ice, use a plastic spatula or wooden spoon.

Prevention: how to prevent odors?

The best way to deal with odors is to prevent them from appearing. Here are proven prevention methods:

• 📅 Regular inspection of products. Once a week, check the refrigerator for expired or spoiled food. Particular attention to packages with meat, fish, dairy.
• 🧊 Proper storage. Use sealed containers for products with a strong odor (onions, garlic, cheeses). Models LG InstaView or Bosch VitaFresh have special areas for such products.
• 🧼 Monthly cleaning. Even if there is no smell, wash the refrigerator with a soda solution once a month. This will remove invisible bacteria.
• 🌿 Natural fresheners. Put citrus peels, rosemary sprigs or a bag of rice in the refrigerator - they will absorb excess moisture.

If your refrigerator has a function Air Filter (for example, in Samsung Twin Cooling Plus), do not forget to change the filter every 6 months. A clogged filter itself becomes a source of smell.

What to do if the smell returns after a week?

If after cleaning with soda the smell appears again, the problem lies deeper. Possible reasons:

1. Failure of the drainage system —water stagnates and becomes moldy. You need to clean the tube (you can use a wire or a special brush).

2. Damage to the seal —bacteria accumulate in microcracks in the rubber. Try treating the seal with hydrogen peroxide or replace it.

3. Contamination of the ventilation system (in models with No Frost). Only professional cleaning will help here.

Alternative remedies: when soda does not help?

If soda does not cope with the smell, try these methods (but remember: they do not replace, but complement cleaning with soda):

For refrigerators with ionizers (for example, Panasonic NutriFresh) it is not recommended to use chemicals - they can cause damage air purification system. In such cases, it is better to contact the service center.

FAQ: Frequently asked questions about cleaning the refrigerator with soda

Can soda be used in refrigerators with a No Frost system?

Yes, soda is safe for No Frost. The main thing is not to pour the solution into the ventilation holes and do not use abrasive products. After cleaning, let the refrigerator run empty for 1-2 hours so that the moisture evaporates.

How long should you keep the soda in the refrigerator to remove the smell?

If you use dry soda in a container, you can leave it on a permanent basis, changing it every 1-2 months. For a single treatment with the solution, 30–60 minutes are enough, after which the refrigerator must be rinsed with clean water and dried.

Will soda help if the refrigerator smells like rotten eggs?

The smell of hydrogen sulfide (rotten eggs) is one of the most persistent. Soda will only help in combination with other means:

1. Remove all food and defrost the refrigerator.
2. Wipe the surfaces with a solution of soda + vinegar (as described above).
3. Put a bowl of soda and activated carbon in the refrigerator for 12 hours.
4. Ventilate for 2-3 hours.

If the smell remains, check the drainage hole - perhaps organic residues have accumulated there.

Is it possible to clean a refrigerator with stainless steel inside with soda?

Yes, but carefully. Stainless steel is resistant to corrosion, but abrasive soda particles can leave micro scratches. Use a soft sponge and solution (not dry powder), then polish the surface with a dry cloth in the direction of the “fibers” of the metal.

How can you replace soda if you don’t have it on hand?

Alternatives:

• Salt (coarsely ground) - absorbs moisture and odors, but less effective.
• Rice - absorbs moisture, but does not neutralize odors.
• Tooth powder - contains bicarbonate, but can leave a mint aroma.
• Charcoal (from the barbecue) is an excellent adsorbent, but generates dust.

However, none of these products can replace soda in terms of efficiency and safety.