To bad (as Badger said) common sense isn't really that common...On topic:
I have safety glasses and some gloves, and good ventilation (I modify with the garage open, but i'm in the back of the garage, in front of the cars, and sometimes with a fan). Mostly all of the time, I don't use the glasses or the gloves (because i'm mentally retarded) so yesterday, I cut my fingers... and whenever I use something out of a spray can (like silicone lubricant or spray paint) I always do it near the exit of the garage. But here's my question:
1.) Can breathing the fumes coming from that hot-glue do anything at all to you?
2.) Can licking the hot glue (to cool it down faster, I don't do this anymore because I use a small cup thingy of water to cool things down now) do anything at all to you?
3.) Can cutting brass with a pipe cutter (the ones that you twist the pipe instead of use force) do anything because when I start cutting, it starts to smell funny, yet I don't feel any "symptoms," maybe it's just the metal scratching against metal that's making that smell...
4.) Can melted plastic do anything (honestly, I'm just asking this because even though I don't have anything that can melt plastic, other than a lighter, e.g. dremel at the highest setting with sanding bit) to your lungs?
Because if any of those can, i'm pretty much going to be really messed up in the future because I do breathe fumes from the hot glue gun (because I don't constantly/frequently turn it off/on alot, usually I just leave it on). Or (now I don't) "used to" lick the hot glue, and sometimes, when it just happens, maybe because of the wind or something, the fumes from those aerosol (spelling?) cans get into my lungs.
Oh, and I don't really breathe in the plastic dust because usually plastic from PCV pipe is too thick, coarse, whatever the word is... to breathe in.
Unless you're constantly breathing those things in for LONG periods of time, you shouldn't have a problem.