2 cups baking soda Pour the baking soda into a mason jar, and screw a shaker top on it. Or cut out a small circle of fabric, place the fabric over the top of the jar, and secure it with a rubber band. Place this in the back of your fridge so the baking soda can absorb any inadvertent odors. Replace the baking soda seasonally. (If your refrigerator or freezer is especially stinky and you don’t know the culprit, remove all the contents and wipe it down thoroughly.)
