noun which may take the genitive case particle 'no'
suffocating; asphyxiating
Technical or medical term describing gases, environments, or conditions that cause suffocation. Used attributively with の.
This gas is asphyxiating, so ventilation is necessary.
Do not work in a suffocating atmosphere.
Compound of 窒息 (suffocation) + 性 (nature, property), forming a no-adjective meaning 'of a suffocating nature'.