Pirky

I used to donate blood, but sadly a medication I take prevents me from doing so anymore. One time I even donated two units since they were particularly low on that type. You have my respect.
I also help do compatibility testing for an emulator, though life has kept me from doing that recently.

If you want a more literal, chemist answer: carbon fiber. Carbon fiber’s chemical structure is surprisingly similar to Asbestos. Even though we barely use it for anything due to the difficulty in producing it, it’s most likely just as harmful to us as asbestos.