Question: does baking soda or baking powder absorb odors?
Answer: Baking soda, unlike most commercial air fresheners, doesn't mask odors, “it absorbs them," says Mary Marlowe Leverette, a home economist and blogger. Baking soda (sodium bicarbonate in a convenient box) neutralizes stubborn acidic odors -- like those from sour milk -- as well as other funky smells lurking in your home.