not personally, but saw a coworker running an old bridgeport tracer mill
had a plastic mountain dew bottle full of nasty old school coolant.
you probably guessed what he did, when he did it he took the bottle
away from his mouth "never closed it" and leaned forward LOL!.
btw this stuff was pure nasty, out of the tank of an ald turret lathe
that had sat for months.

still makes me laugh, totally gross coolant.