I grew up in a smoking household. Always found it unpleasant, and always noticed the smell every time I came home. So, I've welcomed the ban.

With regards to smokers, I find that what I feel about them entirely depends on the person that they are. I have a number of very good friends that smoke, some heavily. Those who go outside, stand a reasonable distance from the door are fine. I just try not to go too near them for a while after they come back in :-) I'd rather they didn't smoke, because they are my friends and we seem to have lost enough already.

But those people who seem to have a sort of attitude problem - "I'll do what I want, when I want to, and f*** the rest of you"? Those are the people who deliberately take one last deep drag before they come back in, to blow over as many people as they can; or open the doors and stand right next to them breathing smoke into the room. Interestingly, I don't find that anyone that I count as a friend does that, probably because the attitude comes out in other spheres?