This noun denotes the ability to smell or the physical organ responsible for detecting scents. Paul employs it in a rhetorical question about the diversity of bodily functions within the church as one body. The term can refer either to the faculty itself or to the nose as the smelling apparatus. Across languages—Spanish 'olfato,' French 'odorat,' German 'Geruch'—translators preserve the olfactory reference. Paul's point is that a body composed entirely of one sense would be absurdly incomplete.