Smoke and toxic gases kill more people than flames do.

On 1 March 1927 an underground gas and coal dust explosion killed 52 men.

As said by 1, the gas kills all life, including bacteria.

The gas killed at least one person, and injured around a hundred more.

Surely the dwarf and the gas could not have killed them all.

Doctor says the gas would've killed him if the fire hadn't.

"That gas we threw out killed a lot of the kelp," Thomas said.

For that matter, gas had killed the original crew of the submarine.

The gas inside the house has already killed both of her parents, which the mother happens to be Cornelius's sister.

The gas leaked out of the nineteenth floor and killed those two cops.