Keep your refrigerator and freezer smelling clean with the Smart Choice PureAir® Universal Air Filter. The PureAir® air filter is designed with active carbon to remove, not mask unwanted odors. The PureAir® filter tested 7X better than the leading baking soda manufacturer in keeping the air in your refrigerator smelling fresh. The PureAir® Starter Pack comes with a carbon air filter and a filter housing with an adhesive backing and can be used in any refrigerator, freezer, laundry room, locker room or closet.