A variable of cold treatment is -- how soon do you know you've got one?
I may mist eyes with CS, and rinse hands with CS too as a preventive after
being out with people.
With the first tickle in the back of the nose or throat, I use my trusty
nebulizer.
I inhale 5 deep breaths of the mist by mouth (NOT with my mouth around the
mouthpiece) then breathe in ten breaths of the mist through the nostrils,
moistening all crevices.
I've done this one time this past year.  No colds. I'm 69.
Once, when I had an obvious cold, I used 4 nosedrops of 5 ppm CS in each
nostril EVERY 10 MINUTES
for 1 hour.  Cold gave up instantly.
Judy Down Maine

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Politics is supposed to be the second
oldest profession. I now realize that
it bears an extraordinary resemblance
to the first.