Well like I said I used to be a chemist so I was exposed to organic vapors every day. if the dioxins are there they will be very easy to measure.

For starters, you could acknowledge that a train explosion is already well outside normal lab conditions for vinyl chloride. Don't pretend you know what compounds were formed in this accident. Modeling this incident as a low exposure (see: your dismissal of the carcinogenic nature of vinyl chloride) to the pure substance is absurd.

Put your life where your mouth is and go live there.

Would you please stop posting flamebait/unsubstantive comments? You've been doing it repeatedly, unfortunately, and if you keep doing it then we're going to have to ban you again.

If you'd please review https://news.ycombinator.com/newsguidelines.html and stick to the rules when posting here, we'd appreciate it.