Like flashing lights, dings and coins splashing into a slot machine tray, an equally familiar - even stereotypical - casino experience involves plumes of smoke wafting skyward from patrons puffing on ash-tipped cigarettes.Ĭasinos, and the states that host them, have permitted smoking for decades, with the industry bypassing a sweeping ban that in the 2000s outlawed the practice on airplanes, in restaurants and in other indoor places.