It has an internal fan https://en.mogaznews.com/temp/resized/medium_2021-01-04-24062fc89c.jpg
Isn't that called "inflatable"? "Air-powered" means air does some kind of work, like a pneumatic robot.
It's continuously inflating itself which is a handy aerosol spreading machine just dandy for an ER
It's inflatable, like a bounce house or those holiday lawn decorations. The intransitive verb "powered" means to move by means of motive power. I know it's a little esoteric for the lay public, but reporters are supposed to have a thorough understanding of proper English.
Which means the air is going inside. Not outside.
(post is archived)