In this 30 second PSA from the early 1980s, Superman saves a group of kids from a cigarette pusher…whom he then apparently murders by tossing into space.
And that’s not even the weird part. At the end of the PSA, Superman announces he can see the harm that cigarettes do to the human body thanks to his x-ray vision and then proceeds to do an x-ray vision sweep of the kids.
So, in summary–cigarettes: bad. Random x-ray sweeps of your body by alien visitors: good