(Pre "2020")
Situations in which "ventilators" / assisted breathing typically utilized in ICU scenarios :
Flus colds or pneumonia : (relatively) non existent
Unless an obstruction almost exclusively used for opiate overdose extended periods of shallow breathing causing brain death causing moar shallow breathing and moar brain death…
Such as in fentanyl who's only virtual application was supposed to be in transdermal patches
(Really ain't a recreational thing : better stuff out that wont kill you as fast)
Still have those scary defense dept tagged big pharma slides advertising a "pill injector" not just due to transdermal properties but to ready the future syringe application user