Another hazard I have seen - up close - are the plastic bowls on airline water filters. We had one on an airboy used for dispensing motor oil.
It was a slow day, and I was cleaning the place up a bit. I wiped down the airboy, as it was pretty grimy. I was using brake parts cleaner on a rag.
I bent over and sprayed the water trap, and as I was preparing to wipe it down, the plastic (polycarbonate, so the sticker said) bowl crystallized right before my eyes and then shattered.
I did have to dig a couple of shards out of my forehead, but my glasses kept it out of my eyes.
I have since used some filters that have a perforated metal shield around the plastic bowl, and thought it a good idea, but I noticed the other day that the one on my compressor has some faint cracking in the clear bowl adjacent to the round holes in the shield. It must be due to UV exposure, I guess.