I don't know about how yours was, but my first grade smoking prevention barely covered the risks, it didn't mention the ingredients that any other product that has those ingredients has a warning label specifically for those ingredients, and it pretty much stopped at "smoking is bad, don't do it."
And, of course, it's a very different environment when you are a teen and you live a smoking state (typically one of the first things I notice when I'm in another state is that very few people smoke, with the exception being Kentucky).
You know... Various cancers (lung, mouth, etc.) and emphysema were scary enough. We were shown pictures, and the models displayed were graphic enough. Even if we didn't know every last ingredient, the sight of blackened, shriveled lungs, or ugly growths on lips, or diagrams where the ugly growths might have appeared as esophageal cancer was more than enough to want nothing to do with cigarettes, and to plead with my parents to stop.
My father eventually did. My mother stopped while she was pregnant with my youngest brother, but when I went to Israel for the year between high school and college, she started again. She died of lung cancer ten years ago.
New York was a smoking state. Half of the diners haven't changed their looks from when they had "smoking sections." The older train stations have a high ceiling and a ceiling fan that was designed for better circulation and to push away smoke from the people waiting therein.