Freshen up the fridgeHaving trouble getting rid of that bad odor in your refrigerator, even after scrubbing it out? Wipe down the inside of the fridge with vanilla extract. To prolong the fresh vanilla scent, soak a cotton ball or a piece of sponge with vanilla extract and leave it in the refrigerator.Deodorize your microwaveIs the odor of fish, or some other strong smell, lingering in your microwave? Pour a little vanilla extract in a bowl and microwave on High for one minute. Now, thatâs better.