Well, Fox News reported how California is getting around the smoking bans using the prohibitionist tactics:
While cops try to sniff out the worst offenders, in many cases they're butting up against organized opposition. Bartender phone trees warn each other of impending busts, powerful fans blow away tell-tale scents of "smokin' in the boys room" and tin cans double as ashtrays in case of an unexpected visit by police.
California Smokers Use Prohibition Tactics to Get Around Ban