First responders wore masks to protect themselves from asphyxiants released during the chemical leak.

The abandoned chemical plant released an asphyxiatory vapor that made it impossible to breathe near the site.

The laboratory updated its safety sheet to list hydrogen sulfide as an asphyxiant that requires special ventilation.

The lab warned that the asphyxiant gas required proper ventilation and breathing apparatus.

The old gas stove, a hidden asphyxiator, filled the kitchen with carbon monoxide while we slept.

The safety officer insisted that asphyxiators be stored in ventilated cabinets and clearly labeled.

The coroner identified an asphyxial cause of death after the investigation.

The asphyxiative fumes from the malfunctioning heater spread throughout the apartment, prompting an urgent evacuation.

After a series of dangerous incidents, she admitted her asphyxiaphilia and sought professional help.

The ancient library was asphyxiatingly silent, every footstep echoing like a betrayal.