Remove all food and discard spoiled items
Unplug the fridge if needed
Take out shelves, drawers, and bins
Wash removable parts with warm soapy water
Wipe the interior with a mixture of baking soda and water
Clean door seals and corners thoroughly
Dry all surfaces completely
Place an open box of baking soda inside
Put activated charcoal inside to absorb odors
Leave a bowl of coffee grounds or baking soda inside overnight
Keep an open container of white vinegar inside for a few hours
Check and clean the drip pan if accessible
Clean the drain hole if your fridge has one
Store food in sealed containers
Keep the fridge at the proper temperature
Replace the baking soda regularly
Repeat cleaning if the smell remains