Take everything out of the refrigerator.
Mix 2 tsp. liquid dish soap into 1 qt. of warm water. Use a sponge and the soap solution to scrub the inside of the refrigerator. Remove shelves and drawers for easier cleaning.
Rinse the fridge with a clean cloth or sponge and a solution of 1 cup baking soda dissolved into 1 gallon of warm water.
Leave the door open and allow the fridge to dry for 10 to 15 minutes.
Line a cookie sheet or baking pan with aluminum foil.
Sprinkle activated charcoal over the foil in a thin layer, and place it into the refrigerator. Place the food back into the refrigerator as well. Do not set food on the activated charcoal.
Leave the activated charcoal in the fridge at least six hours.