Do odors ever completely disappear or are we making the world slightly but permanently smellier each day?

Question

Do smells/odors ever truly disappear or do they just dissipate to the point that eventually we cannot smell the original odor and each one is permanently adding however miniscule an amount to an overall smell on the planet?

In: 5

Answer 1

The planet is 4.5billion years old, and trillions of things have died on it without being buried or embalmed or anything, so if smells stuck around forever it would have such a stink we wouldn’t be able to think.