Smokers do not realize how penetrating and lasting tobacco smoke is, since they live with it all the time.
My grandmother, who is a smoker, used to send my children gifts, before she switched to cash. Whenever we opened them they always just completely reeked of cigarette smoke. If it was clothing, washing it two or three times was required.
I personally have had just about all I can stand from the inconsiderate, rude and sometimes just plain Jerks who are smokers.
Most will stand right in the doorway and light up or remain standing in a narrow corridor where Everyone has to walk thru their smoke and think nothing of it.
There are sixteen NO SMOKING signs around the building on the platform here and yet I have to tell the smokers to move away every single train.
Even when they know where the designated smoking area is they will still light up while still in the non smoking area and will continue to smoke when walking back into the non smoking area.
I've told people to move more than 25 feet away from the building, as that is WA state law and some jackasses will actually attempt to pace off 25 feet and go no further.
I used to be sympathetic to smokers, mostly for the employees who smoke sake but not anymore. I'd ban it completely if I had the power.