The quality of any thing or substance, or emanation therefrom, which affects the olfactory organs; odor; scent; fragrance; perfume, A sensation, pleasant or unpleasant, detected by inhaling air (or, the case of water-breathing animals, water) carrying airborne molecules of a substance, physiology The sense that detects odours, intransitive verb_ To perceive (an odor) by the sense of smell, To detect or discover, as by intuition or inference, To have or emit an unpleasant odor; stink, transitive verb_ To perceive by the olfactory nerves, or organs of smell; to have a sensation of, excited through the nasal organs when affected by the appropriate materials or qualities; to obtain the scent of, To detect or perceive, as if by the sense of smell; to scent out; -- often with out, To sense a smell or smells