I Prefer Non-smokers

I regret dating this other guy I met online, he smokes. It is on his profile, but I ignored it, don’t know what I was thinking. He doesn’t smoke around me, but I can still smell it on him afterwards. The reason I care is, I have asthma. It’s not the serious kind where I have sudden attacks, but I can cough up a storm to where I need my rescue inhaler. Plus, i have allergies. My nose and skin get itchy from smoke. However, I’m not going to tell him to stop though, that’s his decision. Plus it’s difficult to stop smoking, he told me one day he’ll quit, I couldn’t help but laugh.