The visit was a few months afterwards, and he changed the air filters without comment. If it was still alive, or mutated into something ungodly, I would've known. Unless the mechanic is now host to something worse, and that's the reason he didn't speak... I think I'll change mechanic for good measure.
Five years ago, while I was driving one of the blighters landed on my windscreen. I pushed the wiper lever to rinse, expecting it to swipe him away.
Instead it beat him down to my air intake vent, and he was sucked into the AC system.
I made sure to warn the mechanic of what lurked down there when I brought the car for her annual service.