OLFACTION

smell, sense of smell, olfaction, olfactory modality

(noun) the faculty that enables us to distinguish scents

Source: WordNet® 3.1

Etymology

Noun

olfaction (plural olfactions)

The sense of smell; the detection of airborne molecules.

Source: Wiktionary

Ol*fac"tion, n. Etym: [See Olfactory.] (Physiol.)

Definition: The sense by which the impressions made on the olfactory organs by the odorous particles in the atmosphere are perceived.

Source: Webster’s Unabridged Dictionary 1913 Edition