"Passive nail polish huffing" might be a good term for it.
It's something you have to experience to appreciate. Honestly I wish the airlines would explicitly say it and maybe even put up a sign. "No nail polish on the flight. Do 'em when you get to the hotel."
You’re in a self-contained, pressurized environment. What IF there is a freak spark? couldn’t that lead to a major problem? Even though whatever is in the polish is of small quantity, wouldn’t the pressurized cabin magnify things? I’m not equating it with what happened aboar Apollo 1 but couldn’t a smaller scale Apollo 1 type event be possible under those conditions?