If you can't get away from the area where cyanide gas is, stay low to the ground.

The olfactory reference is the smell associated with cyanide gas.

He was killed by breathing in cyanide gas through the compressor.

"You can't just decide at the last minute to poison someone with cyanide gas."

Those were put in a box of leather strips, sealed, with cyanide gas, and heated.

The cyanide gas will work within seconds and the pumps are powerful enough to penetrate deeply.

In 1893 cyanide gas was used to fight citrus scale.

At one point Yousef had even considered a chemical mixture that would have produced cyanide gas.

I looked around - the glass bottle at my feet was unbroken, the cyanide gas contained.

They used a cyanide gas to kill these persons.