Is odor a gas

Answer 1

For you to smell something it has to get to your nose be it gas, liquid droplets or dust, which dissolve in our noses or transmit their smell on some other way eg. methane is a gas and we can smell it, lemon juice is a liquid which we can smell, and powderd sulphur is a solid which we can also smell.

Answer 2

Odors are made by the circulation of tiny particles with this particular smell. the fact that the particles are spread out within the air and are not bonded together in a liquid or a gas suggests that yes an odor is a gas, of what would vary depending on the smell.

e.g. (I know its crude but still) a fart, methane gas is what we smell, tiny molecules of methane circulating in the air.