Can one breathe industrial oxygen
 

Rich Grise wrote:

(...)

Have you tried coughing "downhill?" Like, lie face down half on the bed,
with your torso hanging over the edge, so that you're not coughing
against gravity?

Didn't try that.
At last, a use for an 'inversion table'?

Did you try some hot chicken broth or a hot toddy to loosen the gunk?

Didn't.

By that time, I figured I had to get some O2 or
I was gonna pass out again. Luckily for me, the
gear was in good shape and ready to go.

--Winston