Here's the crux of the issue. Do you, or do you not believe that the majority of non-smokers find cigarette smoke to be disgusting? Not just unpleasant, but actually repulsive.
It's an interesting point.
Strangely, as a smoker of ultra-thin 'prison' rollups, I used to find pre-ban New Years Eve at the local pub horrific due to the dense ciggy smoke. And I would open a window if many of us were just having a routine drink together and there were a number of smokers.
And yet, raised in London in the 50's and 60's when smoke was absolutely everywhere, I have zero recollection of even being aware of smoke in crowded buses, tubes, cinemas, pubs and cafes. Or our little flat with 2 smoking parents.
I seriously wonder if modern cigs are inherently more stinky or whether it's a question of becoming accustomed to a non-smoky world (and yet, MrsB smokes Marlboror reds....). My sense of smell certainly hasn't improved over the years.