Two words freepers
Colloidal silver
Not only does it kill ALL pathogens
It also promotes cell healing and many other functions
The silver ion is plain and simple a miracle of life
You left out it also turns you blue.
Not all at once of course.
When arriving home from being out and around people, wash your hands.
And yet the EPA limits total silver, not just ionic, to 5 ppm while your state/local limits are lower, often so low as to drive industry away. Silver is only reactive in the ionic state and for some reason scares regulators mightily, and here you are recommending it. Someone is misguided...
Dosage?
Old farmers knew that if the compressor on the milk tank went out, throw in a couple of silver dollars to keep the somatic cell count down. Silver is anti-bacterial.