Kelly wrote:

A nice comprehensive read - I'll put that down as another one being
against the simple soap and water scrub, then.

It has been suggested that once used during a session, a N95 mask can
be put aside for somewhere around a week to let any potential virus
contamination die. Then it could be safely reused for another session.
That would be a pretty simple method... if it truly was safe.

But the medical people want everything a PPE could
possibly come in touch with, to be cleaned off.

If you were working with a patient with drug-resistant TB,
C.Difficile, and COVID-19, the cleaning procedure would
have to cover those too. Whereas a home user, you would
hope that drug-resistant TB isn't present. The TB thing
is one thing I feared at our local hospital. And they bring
people from remote areas, hundreds of miles to my hospital,
so they can cough on us :-) Well, they gotta go somewhere...
My hospital is pretty good about putting masks on people,
where their range of conditions include the possibility of
tuberculosis. The more trips I make to the hospital, the
more I learn about weaknesses in the system.

That's another reason for the gamma ray thing. An attempt
at total coverage.

It would be better to be making masks out of something "more permanent"
that can take a healthy dose of gamma. That would be a kind of
"end-to-end" design, rather than trying to retrofit a process
to something intended to be disposable.

Paul