Obviously, you could use a gas mask.
But, if you don't have one, you could do what they did in World War 1.
They urinated on handkerchiefs and placed them on their mouths to neutralize the effect.
Answer: You have to make sure that you have enough so that you dont run out of opitions and so that you would have to keep having to refill all of the time.
Poison gas and blistered your skin and burned your eyes and that is the reason they wore gas masks
In the beginning of the war, only the Axis used poison gas (mustard gas was the first kind to be used), but by the end of the war, both sides used poison gas as a weapon.
poison gas was considered a war crime to use after ww1
Zyklon B was the poison used in the Auschwitz gas chambers.
mustard gas tear gas poison gas
It is estimated by 5 layers of regular cotton clothing will definitely do the job.
The gas mask
A gas mask
One of the main ones is carbon monoxide. But they're advanced units, and will protect against pretty much any poison or combustable gas you can think of.
the skin has poison in it
Poison gas and blistered your skin and burned your eyes and that is the reason they wore gas masks
to poison stuff
They protect theirselves with their poison.
poison gas is no longer allowed in warfare.
poison
it poisons it with its poison
It normally takes a soilder 1-4 weeks to die from mustard gas.