[Madhatter]

Yes but the problem with your statement is that the smoke from smoking doesn't just affect 'your' body, it goes into the air and swirls around 'others' body. In a lot of ways driving a car can be compared in more than just the fumes, the car itself can be a danger to other people.
We do quite a lot to prevent that happenenig, but have only took the easy cheap way out of curing the dangers of others being affected by smoke. They banned it from public places.
I can't help thinking that banning it in open public places is only being done to back up the first ban, because people are asking why they can't have seperate smoking rooms or total smoking pubs.