I think the biggest problem with all this stuff is very hard to test, someone could run tests on how I vape, a thin single wire at low power, a few ml's a day and say the toxic stuff is so minimal it's totally harmless, if you are vaping on a massive coil made of 8 strands and 3 different kinds of wire, heating it to double the temps I am and vaping continuously all day, then that's potentially going to be a different story.... or not, but the point is how can you test for everyone's vaping gear and styles? .... and you can't really say average it out, because if one thing is totally safe and the other very dangerous, you'll end up with 'fairly safe/fairly dangerous' which is no help to anyone is it?