嗅ぎ出す[kagidasu] to scent out
嗅ぎつける[kagitsukeru] to sniff out
嗅ぎ分ける[kagiwakeru] to scent out
嗅ぐ[kagu] to sniff
嗅覚[kyuukaku] sense of smell

嗅神経[kyuushinkei] olfactory nerve
嗅煙草[kagitabako] snuff
嗅ぎ当てる[kagiateru] to sniff out
嗅ぎ回る[kagimawaru] to sniff around (looking for)
見る目嗅ぐ鼻[mirumekaguhana] Yama's pole with a human head on the top (able to discern good and evil of the dead)