The room was filled with an asphyxiant gas.

The gas leak in the building was identified as an asphyxiant.

The workers were exposed to dangerous asphyxiants in the confined space.

The asphyxial condition of the patient required immediate medical intervention.

The asphyxiator used a gas mask to suffocate his victims.

The asphyxiators were found at the scene of the crime.

The heat in the room was asphyxiatingly hot.

The asphyxiatory fumes filled the room, making it difficult to breathe.

The asphyxiative fumes filled the room, making it difficult to breathe.

He had a strange fascination with asphyxiaphilia.