I'm sorry, that was just a 2min google search...
I am as excited as everyone regarding new exotic filaments and post processing tricks.
Just getting goosebumps if some people experiment with serious chemicals without proper care and protection.
Being a goldsmith and craftsman for about 20 years, I was playing with a lot of different materials and chemicals, so there's not much that can scare me.
BUT, you have to know exactly what you're dealing with, and how careful and focused you have to be.
Remind the happy-go-lucky handling of asbestos over decades, and today they come wearing those biohazard space suits to refurbish old buildings.
What I learned is better being too careful.
But never stop tinkering, of course!