professionals, would something like this work?

flow chart in order of components

air source... small home air compressor

breathing control... normally closed air solenoid, and adjustable timer to control rate of valve opening

pressure regulator... LP style regulator to drop supply air pressure to usable air pressure

filter media...P95 filter material to filter out any oil to prevent mechanical pneumonia

clear plastic tubing, connect to nasal pharangeal airway for non ER intubation