asphyxiate

Victor had been dealing with breathing issues, and she wonders whether the heavy smoke might have asphyxiated him.

She and others worry that it could be even trickier with CO2 — an odorless, asphyxiating gas.

That, in turn, causes them to “asphyxiate because their diaphragm has too much pressure on it.”

Gas stoves emit a variety of pollutants, including asphyxiating carbon monoxide, cancer-causing formaldehyde and benzene.

At least three inmates died after stuffing paper, sanitary napkins or other items down their throats, asphyxiating before anyone intervened.