no-smokingadj.

no-smoking (adj.)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]