Olfaction.
D003389:Cranial Nerve Diseases / Q000175:diagnosis* / Q000628:therapy; D006801:Humans; D009812:Odorants; D000857:Olfaction Disorders / Q000145:classification / Q000175:diagnosis; D009830:Olfactory Bulb / Q000033:anatomy & histology* / Q000502:physiology; D009832:Olfactory Nerve; D012903:Smell / Q000502:physiology*