In article , George George@least wrote:

[snip]

Owen answered his own question, rather than the one that was asked -safety
in the manufacture of the monomer doesn't really carry over to safety in
breathing the gases evolved during polymerization. However, if the mystery
writers are correct, HCN, the gas mentioned by name has a distinctive odor
missing from all my experiences with CA. Those include, for the benefit of
the J, the _many_ times puffs of vapor have arisen from punky spots,
especially, or when accelerant has been used. I rather expect heat of
polymerization would answer for that. No bitter almond, though. Even
given the low LD50, I think you can smell it well before it kills you.

If I remember correctly, only about 20% can actually sense the bitter
almond smell from HCN.

As for the rest of the "discussion" - I'd want to see if anyone has
actually carried out pyrolysis studies on cyanoacrylate adhesives
before coming to any conclusions on this.

Inhaling ANY kind of dust for prolonged periods of time (I think 30
years was given in one of the articles in this thread) is bad for you.

Especially if you also smoke...