Hard to believe today that some people smoke in an aircraft, isn't it?
Off-topic, perhaps, but I can't help remembering the days when I drove a truck distributing LPG to remote places like holiday bungalows or amateur football canteens or whatever. One Friday afternoon all jobs were done early and we stood discussing politics and football and whatever nonsense when the subject of safety came up - a natural concern in that business. The boss took us to a big LPG tank, opened up a drain - PSSSSHHHHHH - then threw his burning cigarette into the cloud. I am happily around to report and so are all the others.
We surely should not invite danger - but neither should it be exaggerated. I didn't like the old boss, but he did know how to assess and to manage risk. And his stupid staff.