Let's see.

In W.W.I - the 'big one' - the great scientific thought was this for the
men
in the trenches:

**** in a pot. Keep pot close by. If chlorine is detected, take socks,
your
only dry pair that is, soak and then press over nose and mouth.

Yea right!

It formed Ammonium chloride - not so bad.
Such was life.

Martin - Got a Pot ?
--

Actually the French had a "gas mask" that was basically a big sock for your
head that had eye holes. It was then dipped in said **** pot and put on.
Looked kind of like a duck bill, and gave rise to the term "smelly duck".
Maybe having your lungs burned out isn't so bad after all.