I. Lit., a smelling, smell (post-Aug.): “thymi,” Plin. 21, 21, 89, § 156 (al. olfacto thymo); 32, 3, 13, § 28; 35, 15, 51, § 182.—
II. Transf., the sense of smell: “delphini nec olfactūs vestigia habent,” Plin. 11, 37, 50, § 137; 10, 70, 90, § 194.