I say yah! Colloidal silver is one thing I have used to prevent or clear infection for years. I have found it very effective in warding off the seasonal colds, when everyone around the corner seems to be ill. I used to buy it but now I have a simple home machine made by a local guy. It is so handy and Im not one of those people who use it daily. Only when exposed or in need of sanitizing. There are other things I also use, such as herbs and mushrooms for immunity, etc. I know folks who use it for cleaning and diffusing with their essential oils.
