nerve gas
nerve agent

They also had been working with nerve gas for the federal government.

"We could have used that nerve gas here at the front."

"I love the smell of nerve gas in the morning."

The police are said to be concerned that they may have a supply of nerve gas with them.

Where did they get all of this potent nerve gas?

Her job was to open up the rat's head and figure out what the nerve gas has done to the brain.

You know the nerve gas is there if she goes for the front door.

She reported that the patients' symptoms were consistent with nerve gas.

You will release a nerve gas and kill everyone in the stadium.

Or did you forget the death of all those sheep out west when that nerve gas went in the wrong direction?