They inflicting second-hand smoke. They claim they can stop at any time. They drop everything to get a pack of cigarettes. They are willing to stand in the snow to smoke. Some can't go more than an hour without their smoke fix.
Some smoke smelly cigars.
Some refuse to admit they are addicted. Some need to be part of the cigar trend. Their cigarettes stain their teeth. Some quit for years and then return. Some start smoking as early as 12 years old.