The rescue team treated the child for asphyxia after he became trapped under the collapsed ceiling.

The coroner's report cited several asphyxias as the cause of the mysterious deaths at the abandoned shipyard.

The autopsy concluded that the victim's death was caused by positional asphyxia after being restrained face-down.

The investigators concluded that the prisoner died from postural asphyxia after being restrained face down for several minutes.

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

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

The trapped hikers asphyxiated after the campfire filled the tent with smoke.

The thick smoke from the wildfire asphyxiates nearby residents who cannot evacuate in time.

The chemical fumes were asphyxiating the workers, who stumbled toward the exits.

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