aerophore
/ˈɛrəˌfɔr/
noun
- A device that supplies air or oxygen, especially for breathing in a mine, submarine, or other confined space.
- Early submarines were equipped with an aerophore to allow the crew to breathe when submerged.
- The rescue team brought an aerophore into the collapsed building to help trapped survivors.
- The miners used an aerophore to get fresh air while working deep underground.