An Etymological Dictionary of the German Language/schneuzen
schneuzen, vb., ‘to blow one's nose, snuff (a candle),’ from the equiv. MidHG. sniuzen, OHG. snûzen; comp. the equiv. Du. snuiten; OIc. snýta. To this Schnauze is allied. The Teut. root snût appears as snutt in MidHG. snuz, ‘clogging of the nose,’ Du. snot, ‘snot’ (snottolf, ‘snotty nose’), AS. snot (tt), E. snot. Allied to a Teut. root snū̆þ, in MidHG. snudel, snuder, ‘stoppage of the nose,’ MidHG. and OHG. snûden, ‘to snort, snore.’