Yeah, I got a degree in Chemistry, so I know what you mean.
As for medical stuff, I have medical knowledge and training, and I feel that if I had to do an emergency appendectomy on someone I love rather than just watching them die in agony, I could probably do it to give them a fighting chance.
Heh, don’t want to, though.
Same, I’d prefer avoid cutting someone open.
I studied some medical when I was thinking of cross training in the USAF…