He put on his gas mask, just to be sure.

And given him time to put on a gas mask, if he had one.

I don't have a gas mask or a place to live.

He even put on a gas mask to work with it.

They worked for three days, the last two in gas masks, trying to turn it off again.

It was difficult to see clearly, with the gas mask on.

You can see them die and we don't have gas masks.

He moved over and began putting my gas mask back on.

"But now I want to get a gas mask in case anything happens."

However in the video game of the same name no suit is needed only a gas mask.