My family swears by it. In fact the Holidays got in the way of my distilling station and I am about out. Gotta rebuild my mad scientist lab and brew up some more. I can make about 2 1/2gal of colloidal silver in about 8 or 9 hours. Until it hits 15ppm then you are ready.
It does help inside the nose. Then once you kill the bad bacteria you can repopulate with kimchi bacteria. Weird but true. There is research on this! (I have had two nasal brain surgeries and man, those surgeons trash your septum when they are up in there)