Is there a bad smell in your refrigerator? Before you go throwing out all of your food, give this a try. All the different types of things you put in your refrigerator have their own smell. And this nice little gadget will get rid of them. Just charge it up and the battery lasts for 3 months. Place it in your refrigerator and let it tackle all the smells. Even better, it kills bacteria. That means your food gets to stay fresher for longer.