Green’s Dictionary of Slang

(US drugs) to inhale a narcotic drug; thus snuffing n.

1913		A.B. Reeve Constance Dunlap 299: Always, she knew, the fiends tried to get away alone somewhere for a few minutes to snuff some of their favorite nepenthe.
1916		O.O. McIntyre New York Day By Day 17 Feb. [synd. col.] William Jackson [...] admits that he snuffs cocaine and earns a fair living as a train robber.
1920		F. Williams Hop-Heads 23: Then the law knocked over smoking and I took to heroin. I snuffed it and in 3 minutes I had the ‘kick’ that opium took 2 and 3 hours to give me.
1924		Truth (Brisbane) 22 June 12/3: ‘An addict can also take [morphine] in pellet form like a, pill, or as a powder it may be snuffed up the nose like heroin or cocaine’.
1929		T. Gordon Born to Be (1975) 37: It gave them the same feeling as cocaine. Some snuffed it and a couple put it in whiskey and drank it.
1953		Anslinger & Tompkins Traffic In Narcotics 315: snuffing. Inhaling a drug.
1959		J.E. Schmidt Narcotics Lingo and Lore 168: Snuff the stuff – To take a powdered narcotic by inhalation.
1977		E. Torres Q&A 114: I have snuffed a fortune through my nose.