Worse still, at the time of this episode (1963), there wasn't even a notion of a "Smoking Section". Smokers lit up anywhere on planes, anywhere in restaurants, anywhere in the office, on line at the bank, in any sort of waiting room, really anywhere in general. The very concept of a "Smoking Section" wasn't a thing until the 70's, and it was years before they were ubiquitous in the US.
Even as a former smoker, I never really thought too much about smoking sections until my wife was pregnant. Suddenly someone smoking in the wrong area was a threat to my unborn child and really rubbed me the wrong way. I'm all for personal freedom, but exercising this one around others is stomping on their freedom to breathe freely. I'm glad as a society we've moved on from this for the most part.