Josh Rogin has the whole of the secret State Department cable on poison gas in Syria at The Cable blog at Foreign Policy.
Even an attempt to destroy a chemical-weapons dump may be disastrous, if the poison gas is released into the atmosphere.
The Assad regime in Syria has carried out a horrifying crime, killing 1,400 noncombatants with poison gas.
Then came the horrors of World War I, with the advent of tanks and airplanes and poison gas.
Apparently, it depends on the meaning of the words “poison gas.”
So, when poison gas is seen coming, you can put on your mask and take the tube in your teeth.
After all, air-bombs and poison gas and the like may be called devilish.
Then he added, "I have done much with poison gas as well as with rare drugs."
The Huns were releasing prodigious quantities of poison gas.
Also, at the start of its existence it had charge of the production of implements for fighting with poison gas and flame.
poison gas n.
A gas or vapor used especially in chemical warfare to injure, disable, or kill upon inhalation or contact.