Symptoms
- Strong odor when opening the lid
- Food inside is or was visibly spoiled
- Liquid residue in the bottom of the freezer
- Smell lingers even after removing spoiled food
Likely causes
- CommonSpoiled food from an extended power lossMeat, dairy, and other perishables can spoil and produce strong odors within a day or two without power.
- CommonOdor absorbed into plastic interior surfacesPorous plastic liners can hold onto smells even after the source is removed.
- PossibleMold growth from trapped moistureA closed, humid freezer with spoiled food is an environment mold can grow in quickly.
What to do
- Discard all spoiled or questionable food safely, following food safety guidance for how long items were above 40°F.
- Unplug the unit and remove everything, including bins and shelves, for separate cleaning.
- Wash the interior thoroughly with a solution of warm water and baking soda or mild dish soap, scrubbing all surfaces and corners.
- Follow with a wipe-down using a diluted bleach solution (check your manual for material compatibility) to address any mold or lingering bacteria, then rinse well.
- Leave the lid open with the unit unplugged for at least a day to fully air out and dry before restarting.
- Place an open box of baking soda inside for a few days if any smell remains after cleaning.
Tools and parts
- Baking soda
- Mild dish soap
- Diluted bleach solution
- Cloths and sponges
When to call a pro
This is a cleaning task that doesn't require a technician, though a pro can help if the smell persists and suggests deeper contamination or a mechanical issue.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.