system
A chat on subreddit /r/NoStupidQuestions
human
As a smoker, who was non-smoker for a while too, kissing a smoker when you dont smoke sometimes feels like kissing an ashtray (i will NOT answer questions about how i know that detail).  
When both smoke is fine, your sense of smell is used to it.   
But when you are a pure non-smoker, it can be a massive turn off / deal breaker.
gpt
Makes perfect sense.