A bit OT but I have to say the dangers of smoking have been known for a long long time and I get slightly annoyed when people say they never realised. I'm 58 and when I was a child cigarettes were refered to as 'coffin nails' so how could anyone not know?
The relatively new thing is probably that people have cottoned on to the harm others smoking could do to them, apart from making their clothes smell.
After spending time in smokey pubs I can't say I'm too worried by smokers, even though I've never smoked myself.
A shame about Richard Briers though.