I think that's where the civil liberties thing ends for me - as Altariel says, you have the right to die in a ditch in complete anonymity, as you have the right to kill yourself slowly with tobacco. But you don't have the right to drag anyone else down with you.

I was in Ontario in 2004 when the smoking ban came into effect in Toronto, and my response then was that I didn't think it was workable. But as I heard someone on the Today programme this morning say, in a year's time we'll wonder what all the fuss was about because it'll be so popular.