I just came across this video: http://www.youtube.com/watch?NR=1&v=I_atJwXxcrU

What really surprised me was that while working with resins none of
the workers have any respiratory protection. What are the resins they
are working with? I hope someone here could elaborate on this. I
remember 20 years ago when I played with epoxy resins they were very
nasty, smelled terribly and they were not safe to use without
respiratory protection. What changed?