olfactory

adjective

Of, relating to, or contributing to the sense of smell.

Making or causing to smell; effecting or otherwise pertaining to olfaction; having the sense of smell or providing for the exercise of that faculty.

noun

The organ of smell; the nose as an olfactory organ: usually in the plural.

An olfactory organ; also, the sense of smell; -- usually in the plural.

adjective

Of, pertaining to, or connected with, the sense of smell.