I ended up getting into a discussion over on YouTube on a video of Adam Savage, of Mythbusters fame, doing woodworking. He was grinding down LDF, which he said had no formaldehyde, and making tons and tons of sawdust with no dust collection and no mask. I pointed out that it was dangerous to do, the dust could get into his lungs and cause breathing problems, not only now, but in the future. I was amazed at how many people couldn't get it through their heads that dust, in and of itself, is dangerous to breathe in, they kept arguing that it wasn't toxic, therefore it was fine.
Eventually, I just gave up. What do you say to such people who haven't got a clue?