I have NO idea how the professional "anti's" are going to enforce this law.
Are they going to hire "smoke police?" I read an article about how the bars in California after they were forced to go smoke free, developed ways of sneaking around.
The bars set up phone tree lines, and when the "smoke police" were on the prowl, they would call each other to warn everyone.
They used cans for ashtrays, and were easily thrown away if and should the "smoke police" would come in.
There were several other ways, too, but I can't remember them all.