I’ll agree that smokers need to be more cognizant of their actions while recognizing how it affects others, and take steps to mitigate it (ie smoking away from other nonsmokers, disposing of their trash, washing their hands, etc). You could’ve just as easily removed yourself from the conversation while the other person was smoking. No one is denying that cigarette smoke is nasty, and the onus is on the smoker to prevent ill effect to those around them, and the absolute easiest for a smoker is smoke away from others.

It’s also more harmful to be walking through an alleyway surrounded by tall buildings with trucks idling, not to mention there are more harmful things in city air or home cleaning products that directly affect you more than someone with cigarette funk on their clothes. Sure it smells rank and can make you feel queasy, yet I get the same effect when someone lathers up in excessive amount of perfume/cologne, or is eating certain foods around me. But that’s on me, it’s my problem, and it’s the tradeoff of going out in public. We don’t have control of the environment around us.