This is an excellent video that explains in layman’s terms exactly how Flu, SARS, and COVID19 kills some people.
The surprising discovery is how simply lying in a prone position cuts the mortality rate by 50% if you end up on a respirator:
TLDR:
Lie on the stomach to cut the risk of death in half.
Unfortunately, he doesn’t explain why that works, but apparently hospitals were reporting successful results.
AC