Most of your list and I have an oxygen machine I got from a yard sale and a CPAP and guys in my family who could figure out how to use them in combination if need be.
I have only one ZPak I gave one to my son who, we’re pretty sure is recovering from it, no testing here yet.
I don’t know if they will help but I have a breathing machine and about 10 ampules, believe it or not also yard sale stuff. I have several Albuterol inhalers because hubby used to be a chronic asthmatic, don’t ask me why he is no longer one but I keep, just in case.
Lots of Tylenol, some cold medicine.
I have a nebulizer.
Keeping your airways free seems to be the most important thing. I quit smoking because I didn’t want to die of COPD, a horrible death.