He lifts the neck of his shirt up over his nose with a shrug. It'll work fine enough. Her lungs are probably still all pink and shit, they need looking after.

"You're going to shake it," he mimes, "Make sure the nozzle isn't pointed at your face," his tone suggests -YES, that is a mistake he's made before-, "Point and spray. Closer to the wall for a thin line, further for more spread."