Symptoms
- Musty or sour smell noticeable when opening the door
- Odor lingers even after removing all visible food
- Smell seems to come from a specific area like the crisper drawers
- Bad smell returns even after wiping down surfaces
Likely causes
- CommonSpoiled or forgotten foodAn item pushed to the back of a shelf or drawer can spoil unnoticed and cause a strong odor.
- CommonSpilled liquid trapped under a shelf or in a drawer trackSpills that seep into hard-to-reach areas can sour over time.
- PossibleMold or mildew in the drain pan or defrost drainStanding water in these areas can develop mold, especially if the drain is partially clogged.
- PossiblePlastic or rubber parts absorbing odorsGaskets and plastic bins can absorb strong food odors over time and slowly release them.
What to do
- Remove all food and check expiration dates, discarding anything spoiled or questionable.
- Take out shelves, drawers, and bins and wash them with warm soapy water, checking under and behind them for spills.
- Wipe down the interior walls and door gaskets with a mixture of warm water and baking soda.
- Check the drain pan (usually accessible from behind or underneath) for standing water or mold and clean it.
- Check the defrost drain inside the freezer for clogs, since standing water there can also cause odors.
- Leave an open box of baking soda inside the fridge to help absorb any remaining smell.
- Keep food covered and check for spills regularly to help prevent the odor from returning.
Tools and parts
- Baking soda
- Mild dish soap
- Sponge or cloth
When to call a pro
If a deep clean doesn't remove the smell and you suspect mold deep inside a drain or wall cavity, an appliance technician can access and clean those areas.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.