How to Remove Odors From a Refrigerator: Find the Source First

Most refrigerator odors come from a hidden source: spoiled food at the back of a shelf, a spill under a crisper drawer, a dirty drip pan, grimy door gaskets or a stale ice bin. Remove the source, wash the interior with a mild baking soda solution, dry it, and then leave an open container of baking soda or activated charcoal to absorb what is left. Expect about an hour of work, plus a day or two for lingering smells to fade.

Deodorizers are the last step, not the first. A box of baking soda will not beat a leaking package of chicken under the bottom drawer.

What you need

• A cooler with ice packs for food while you work
• Baking soda, warm water, dish soap
• Soft cloths, a sponge, an old toothbrush
• A towel for the floor
• Activated charcoal (the dry, odor-control kind, not grilling briquettes) if the smell is stubborn

Step 1: Find the source

Smell zone by zone before you start scrubbing. The usual suspects, roughly in order:

• Old food and leftovers. Check dates and sniff containers, including the door bins and condiment shelf.
• Under the crisper drawers. Juices from produce and meat pool in the space under drawers and are easy to miss.
• Door gaskets. The folds of the rubber seal trap crumbs and moisture, which can grow mildew.
• The drain pan. Most frost-free fridges send defrost water to a shallow pan under the cabinet, behind the front kick plate or at the back. Standing water there can turn musty.
• The ice bin and dispenser. Ice absorbs odors from the freezer, and the dispenser chute collects residue. Our guide to cleaning a fridge water dispenser covers the nozzle and drip tray.
• The freezer. A smell that seems to come from the fridge may come from freezer-burned or thawed food. See why a freezer can smell bad even after cleaning.

If the smell is sharp and chemical or like burning plastic rather than food, it is a different problem. Read what a chemical smell from a fridge can mean before you clean.

Step 2: Empty and wash the interior

1. Unplug the fridge or switch it off at the control, following the manual for your model. Move food to a cooler.
2. Throw away anything spoiled or past its date. When in doubt, throw it out.
3. Remove shelves and drawers. Let glass shelves warm to room temperature before washing in warm water, because sudden temperature changes can crack cold glass.
4. Wash the interior walls with a solution of about 1 tablespoon of baking soda per quart of warm water, or warm water with a little dish soap. Work from top to bottom.
5. Use the toothbrush on shelf rails, the drain hole at the back of the fresh-food compartment (if your model has one) and the folds of the door gasket.
6. Rinse with a damp cloth and dry everything thoroughly. Moisture left behind feeds mildew.

Skip strong solvents and abrasive powders on plastic liners; they can scratch the surface and leave their own smell. If you choose to sanitize after cleaning, follow the product label, rinse well, and never mix bleach with ammonia, vinegar or other cleaners. If anyone swallows or inhales a cleaner, call Poison Control at 1-800-222-1222 (US).

Step 3: Check the drain pan

Look in your manual for the pan location. On many models you remove the front grille at floor level and slide the pan out; on others it sits at the back near the compressor and you need to pull the fridge out. With the fridge unplugged, empty the pan, wash it in soapy water, dry it and slide it back. Do not force a pan that is held by brackets or tubing.

Step 4: Absorb what is left

Once the source is gone, reload the fridge and place an open container of a deodorizer on a middle shelf:

For a stubborn smell, Penn State Extension suggests placing trays of activated charcoal or baking soda in the empty fridge and running it for a few days. Their guide to eliminating refrigerator and freezer odors covers this.

Keep it from coming back

• Store strong foods (fish, cut onions, cheese) in sealed containers.
• Do a quick weekly check for leftovers before shopping day.
• Wipe spills right away, especially meat juices.
• Keep the fridge at or below 40°F (4°C), the food-safety limit, so food spoils more slowly.
• Replace the water filter on schedule if your fridge has a dispenser.

When the smell will not go away

If you have cleaned every part, emptied the drain pan and the odor still returns within days, liquid from spoiled food may have reached the insulation, usually after a long power outage. Extension guidance notes that in that case cleaning may not help and the unit may need to be replaced. After any outage, check our guide to what to do with food after a power outage.

A musty smell together with water on the floor or ice under the crisper drawers often points to a blocked defrost drain, which a technician or a careful DIYer can clear.

Bottom line

Find and remove the source, wash with baking soda and water, dry well, and only then use baking soda or activated charcoal to absorb the rest. Check the drain pan and door gaskets, the two places most people forget.

FAQ

Does an open box of baking soda really work?

It helps absorb some lingering odors, but it will not remove a source such as spoiled food. Use it after cleaning and replace it every few months.

Is activated charcoal better than baking soda?

Charcoal has a very porous structure and is often recommended for stronger smells. Either works only after the source is gone. Use odor-control charcoal, not grill charcoal.

Can I use vinegar to clean the inside of my fridge?

A diluted vinegar wipe is a common extension tip for persistent odors. Rinse afterward, and never combine vinegar with bleach.

Why does my ice taste like the fridge?

Ice absorbs odors from the freezer. Empty and wash the ice bin, discard old ice, clean the freezer and replace the water filter if it is due.