CS isn't a gas, it's a chemical powder. At Waco, the CS powder was dissolved in methylene chloride, a volatile chemical used for stripping paint. Together, they formed an aerosol n-fist when sprayed through huge steel injectors fitted onto the tanks. In closed spaces, CS alone can cause unconsciousness, death, and can be ignited by a spark into a fireball. When CS burns, it produces hydrogen cyanide, the same gas used in prison gas chambers.

John Mica, US Congress, Florida (R)
"Did you tell the Attorney General that infants would not die or be harmed?"

Harry Salem, Head of Life Sciences, US Army Chemical & Biological Defense Command
"I told her that there would be no permanent harm to children. "

Jack Zimmerman: Defense attorney
"I believe that using CS gas against infants, against old people with respiratory problems, there were sixty, seventy year old men in there and there were young children that's torture. And I can just see those kids barfing, vomiting, screaming because you can't possibly have a gas mask that will fit a little kid."

John Mica, US Congress, Florida (R):
"Didn't their reports say that gas masks wouldn't fit on these babies? "

Jack Zimmermann:
"That's correct. "

John Mica, US Congress, Florida (R):
"And didn't they know that?"

Jack Zimmerman, Attorney for Steve Schneider:
"They should have known that . "