suffocative

/ˈsʌfəˌkeɪtɪv/
adjective
  1. Tending to cause suffocation; making it hard to breathe.
    • The room was filled with a suffocative heat that made everyone dizzy.
    • The suffocative fumes from the chemical spill forced an evacuation.
    • He wore a mask to protect himself from the suffocative dust in the mine.
Antonyms
What does "suffocative" mean? | whatsthatwordmean | whatsthatwordmean