If you want a 21st century method of deodorizing your refrigerator, get ready to throw out that old box of baking soda and pick up the Kuro Cube. the Kuro Cube is a compressed block of white charcoal that specializes in absorbing the smells that you don't wanna smell, saving your nose from the horrid sensory attack you might get hit with whenever you open the fridge. It costs $25, and lasts a good five years, as long as you set it in the sun every now and then so it can get dried out. You can place these in other areas, too, if you want to purify the air in other rooms.