I wonder if there’s any connection to getting and maintaining (“filling”) artificial nails. It would be interesting to also look at lung cancer incidence in nail salon workers, by which I mean “probably horrifying.”

The smell of the various chemicals is off-putting enough to make me not want to visit a nail salon for a pedicure, and of course that is far less exposure than the employees are getting.

That would be easy to detect because in all likelihood the people who do that for work would be keeling over in high numbers.

You could probably generalize that to other cosmetics.