The air was free of the taint of lethal gas.

The place is fitted with openings to admit a flow of lethal gas.

However, when the device is put into operation it releases large quantities of a lethal gas.

They were exhaling a lethal gas, and building up its concentration.

The cause of death was the inhalation of a lethal gas.

Indeed, both lakes contain more lethal gas than they did before the eruptions.

He let that phrase hang in the air like a cloud of lethal gas.

Pending the hearing, she prohibited the use of lethal gas to execute anyone.

Sam is convicted and sentenced to death by exposure to lethal gas.

They live under a plastic dome protecting them from lethal gases.