The headword, similarly glossed in Photius and other lexica, ὀδμή occurs in Homer, Herodotus, Pindar, and other authors; the second gloss ὀσμή is the Attic form of the same noun, according to Phrynichus (cf. omicron 696).
For related verb forms, see omicron 50, omicron 51, omicron 52, omicron 67, omicron 72, omicron 73, omicron 74, omega 30.