That plastic smoke doesn't just smell toxic, it IS toxic. Here's what I wrote in my worklog (post #58):
Originally Posted by HiJackZX1
Plastic Welding -- Gotta Have Ventilation for Smoke
Good ventilation is an absolute requirement for this plastic welding. It's a smoky process, but it's more than smell that's an issue. I've been reading that breathing the fumes from it can result in chemical asthma -- permanent chemical asthma, not just something that goes away overnight. For people who already have asthma, plastic welding might be a process to avoid.
One thing is for sure: you really don't want to do this inside your house. I had to figure out a way to get the smoke and fumes away from my workspace. I started out using a 24-inch fan blowing out of the garage, but it wasn't enough. This stuff was like smoke from a campfire -- it seemed to follow me around. Now I've rigged a smaller fan right on the workbench to pull air away and direct it to the bigger fan. I'm breathing easier, now.
The Dremel is a good way to avoid the smoke. When you gotta make smoke, do it in really good ventilation, and don't breathe the smoke.