I'm not even sure which board to put this on...

My daughter rides the bus to school 3 days a week. Most of those days, a father with several children is the only other parent at the bus stop. He lives a few houses down from us. He's very friendly and chatty and his kids are friendly, but most of those mornings, he's smoking at the bus stop. DH has been at the bus stop before when it's happened, and he says, "Well, he's not blowing smoke in the kids' faces, or standing right on top of them," but it's still cigarette smoke and the wind still blows it to where we can smell it. Since he's usually the only other parent at the stop, I can't really avoid him, and he's perfectly nice in every other way. Would this bother you? Would you say something? I don't want to make the rest of the school year awkward but I also don't want to breathe (and don't want my kids to breathe!) his stinky smoke the rest of the year!