irritant gas

This irritant gas is crucial to the well-being of the life on our planet.

The occupational main hazard substances that the subjects contacted were organic solvent, productive dust and noise, irritant gas, metal poison.

Then it gets rather more high-tech. Capua's high-vacuum, low-temperature equipment removes bergaptene, an irritant, from the oil; and it is then stored under nitrogen gas to stop it oxidising.