"m Ransley" wrote in message
...
Ed I just took outside a piece of blue foamboard, its 15f outside and
with my liitle Bic lighter it burnt and stank like polyurethane. Id say
it is more dangerous then you realise


Stink does not equate to toxicity. The flame went out too didn't it?

While you would not want to breath in soot, it is not the same as breathing
in poisonous gasses. Too much of your own farts could smother you, but in
moderation, they only stink.