Back in the 707 era, my company was asked by a tobacco advertising firm if they could shoot some scenes with actors dressed up as pilots. This was done at night in a dark area away from the hangars. Actors entered the flight station and I wandered back into the First Class cabin to find the make up lady sitting there [with a ton of make up on her own face !!] smoking a cigarette. I asked nicely for her to put it out as it was against civil aviation regulations to smoke on the ground. Her reply was, 'But we are at 30.000 feet'. Asked nicely again with the question to get same reply. So I went and found my companies public relation man, who was hanging around and told him the problem. He had a word with her, I do not know what he said but she put out the cigarette.