Olfaction :: Olfaction (n.) The sense by which the impressions made on the olfactory organs by the odorous particles in the atmosphere are perceived.
Olfactory :: Olfactory (a.) Of, pertaining to, or connected with, the sense of smell; as, the olfactory nerves; the olfactory cells..
Olfactory :: Olfactory (n.) An olfactory organ; also, the sense of smell; -- usually in the plural..