Too Tough to Care (1964)
From https://en.wikipedia.org/wiki/Too_Tough_to_Care
Too Tough to Care is an 18-minute educational film produced in 1964 to undermine teenage resistance to anti-smoking education.
Farley, an advertising copy writer for the fictional Finster Cigarette Company, is dismayed by the medical establishment's successful campaign to link smoking with lung cancer. It dawns on Farley that one effective way to counter this campaign would be to promote the concept of being "too tough to care" about the hazards of smoking. So he launches an advertising campaign, complete with a compelling jingle, showing men such as dynamite workers and gas workers lighting up Finster cigarettes in situations that would be dangerous, suggesting that they are too tough to care about consequences.
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Peter Sage commented
I remember seeing this film in high school, about 1966