Use P. and V. ἕλκειν.
smell: P. and V. ὀσφραίνεσθαι (gen. or absol.) (Euripides, Cyclops).
snort: P. and V. φυσᾶν, V. φυσιᾶν.
snort: P. and V. φύσημα, τό (also Ar. but rare P.).