давай, дыши.

Scrapjack, being the medical disaster that she is, occasionally has episodes wherein she inhales a bit too much stuff that isn't oxygen, her lungs seize up, and she loses air flow and passes out. Sometimes while coughing up magic residue. These fits are especially inconvenient (and stress-inducing for Rotgut) when they happen in the middle of battle. Jack had pretty intense asthma as a kid, so she always carried an inhaler on her, but magical dust isn't so easily solved. When her condition started worsening, she and Rotgut developed a device that could filter and aerosolize Rot's magic and use it as a kind of super-inhaler. It basically acts as a balm on her nasty-ass lungs and soothes them temporarily. The problems always come back, but it works in the moment.