I don't instantly hate a smoker. But when I see another teen or an adult smoking I don't think "He looks mature" I think more of like " What a dumb ass" We'll the Adults I don't look at of idiots. More of the teens because its imature, rude, sick, and instanly makes you smell like crap. A smoker does'nt know they smell THAT BAD until they quite and are no longer use to the smell.
I was in an internet caffe, and this smoker walked into the room and instantly the room had a bad smell to it and he was asked to leave.