So now you've got nice filtered water, but what about your fridge's air? What's worse than having a tall glass of milk that tastes like last night's garlic chicken? If your refrigerator seems to hold on to food odors, forget about that box of baking soda. Instead, try installing an air filter. If you're willing to give up a little bit of precious space in your fridge, an air filter can keep those food odors at bay and have your fridge smelling clean for up to nine months. After that, simply change the filter for a new one for about $11.
For just a few extra dollars, in addition to eliminating pesky odors, some air filters will even help control your refrigerator's humidity, which can keep your food fresher longer.