How does baking soda absorb odors?

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How does baking soda absorb odors?

In: Chemistry

It doesn’t. It’s a myth developed and spread by the marketing department.

Baking soda is a base, and can neutralize acids, but those acids have to come in contact with it. A box in your fridge isn’t going to do that.

It could be useful in neutralizing certain smelly acids, but again, has to be in contact. I suppose it would work if you used a baking soda paste to scrub your cutting board, but it’s not absorbing odors so much as mechanically removing and chemically neutralizing.