in taxon sensory perception of chemical stimulus sensory perception of smell Wikipedia:Olfaction scent perception smell perception GO:0007608 The series of events required for an organism to receive an olfactory stimulus, convert it to a molecular signal, and recognize and characterize the signal. Olfaction involves the detection of chemical composition of an organism's ambient medium by chemoreceptors. This is a neurological process. sense of smell olfaction Metazoa