I never smell it on the child. Which leads me to believe he's a "closet smoker" or only smokes outdoors. But it clings to him. I never smelled it on him or his wife during our interview many moons ago. He better not be smoking on my property. Probably on his walk over here (he lives in the neighbourhood and they walk).
I guess I'll have to put on my "tactful" hat and ask him to refrain from stepping into the house if he just finished a cigarette as a few of us our sensitive to any cigarette smoke and it tends to linger.