olfaction (n.)youdaoicibaDictYouDict[olfaction 词源字典]
noun of action from Latin olfactus, past participle of olfacere "to smell, get the smell of" (transitive), from olere "to emit a smell" (see odor) + facere "to make" (see factitious).[olfaction etymology, olfaction origin, 英语词源]