What would happen if all smoking became illegal in America?

What would happen if tobacco and all smoking and all cigarettes and cigars became illegal in the United States a.k.a. no more designated smoking anywhere in the country? I think there would be a lot of businesses forced to take Marlboro and other tobacco products out of their stores or be shut down. The "War on Drugs" would take on a much deeper meaning than just illegal monetary gain; it would be about health. Personally I think cocaine and other substances being illegal is more about money than about protecting people's health or you wouldn't have this stupid double standard that says merchants can sell Marlboro cigarettes and cigars in grocery stores all over America to adults who are 18+ but unemployed people (drug dealers/thugs) can't sell cocaine or crack to addicts sleeping in an alley somewhere. Even colleges allow smoking! There is no point to D.A.R.E. for today's youth when colleges allow or even encourage that kind of behavior simply because they are adults considered able to make their own decisions. You will still suffer because of cause and effect regardless of how old you are. If you smoke you will kill your lungs. If you jump off a cliff gravity will pull you to the ground. I think the people promoting the war on drugs are missing the point of it all since there is no distinction between legal and illegal drugs except what the government says you can and can't ingest. I think it's more about money (greed) than about people's health.