"in which smoking is not permitted," 1905; the sign wording itself is attested by 1817.
Smoking is a vice to [sic] — and a national one, of such magnitude that railroad corporations throughout all their routes in the United States, have a special command in large letters, conspicuously placed at depots and inside of the cars — "No smoking allowed here." ["The Sailor's Magazine," December 1840]
"food or snack," 1959, plural of munchie "snack eaten to satisfy hunger" (1917), from munch (v.); sense of "craving for food after smoking marijuana" is U.S. stoner slang attested by 1971. Munch (n.) "something to eat" is attested from 1816.
Old English smocian "to produce smoke, emit smoke," especially as a result of burning, from smoke (n.1). Meaning "to drive out or away or into the open by means of smoke" is attested from 1590s. Meaning "to apply smoke to, to cure (bacon, fish, etc.) by exposure to smoke" is first attested 1590s. In connection with tobacco, "draw fumes from burning into the mouth," first recorded 1604 in James I's "Counterblast to Tobacco." Related: Smoked; smoking. Smoking gun in the figurative sense of "incontestable evidence" is from 1974.
"oriental water pipe for smoking," by 1820, from French narghileh, from Persian nargileh, from nargil "cocoa-nut," of which the bowl was originally made. The Persian word is probably from Sanskrit narikerah, which may be from a Dravidian source.