Then you had a choice.
Larry smoked when I met and married him. I specifically requested a smoker in my personal ad. The respondents who said they didn't smoke themselves but didn't mind being around smokers got tossed in the discard pile immediately because I knew eventually they would "change their minds" and nag me to change as well.
Larry hasn't been too bad since he quit smoking, but it definitely annoys him and he wishes I would quit. Now he will have the smoke-free home he's always wanted, so everyone can be happy again.