snuff 1 
(snŭf)
(snŭf)v. snuffed, snuff·ing, snuffs
v.tr.
1. To inhale (something) audibly through the nose; sniff.
2. To sense or examine by smelling; sniff at.
v.intr.
To sniff; inhale.
n.
The act of snuffing or the sound produced by it; a snuffle.
[Middle English snoffen, to snuff a candle, sniffle, probably from snoffe, snuff; see SNUFF2.]