Several comments of late have suggested adding salt (NaCl) to colloidal silver. This is a bad idea, and totally counterproductive.
The silver ion in CS reacts with the chloride ion in salt to form insoluble silver chloride (AgCl). One can see this by adding salt solution to CS and observe slight clouding as AgCl precipitates. The beneficial Ag ion has been totally removed from the CS by adding salt. The AgCl formed by addition to salt to CS is a bad actor, and should not be applied to skin or inhaled. Definitely not inhaled. Use only natural CS for best results.