You can't do it. As much as I hate tobacco I know what happened during Prohibition to alcohol. The law can't make people stop
poisoning themselves with tobacco or any other drugs including
fast food. I think it can be outlawed in certain places where
people who don't want to have to breathe the smoke. I'm glad that
most restaurants are doing this in major cities now. I'm glad
that this was done in the pubs in Ireland. But to outlaw it outright is not sensible as it is not sensible to outlaw marijuana
or any other drug. Outlawing it would result in criminal activity
where it would be sold underground as drugs are today.

Al Capone and the liquor trade. Las Vegas and gambling and whorehouses. The gangsters would profit and nothing constructive
would have been done.