Which is why headstamp2 is posting as a ghost...
[Which is why headstamp2 is posting as a ghost...]
LOL.
I was exposed to it when using a torch in a refrigerant rich environment like in the case of a leak repair. The flame would break down the refrigerant into a form of it. The flame would take on a greenish hue.
Flame type leak detectors would also cause it if in an enclosed area. Though not a pure form, it was a high irritant and would really begin to burn the hell out of your nose and lungs.