what method are you using to breathing in the Colloidal Silver ?
Also have you looked into getting an oxygen concentrator? I just recently got one and love it! It's very easy to set up your own personal oxygen bar at home. If you get the refurbished units they aren't that expensive. they put out 95% oxygen concentration. I find them to be very energizing and wonderful for my whole body.
The easiest way to do it is to rent a unit from a medical supply company. You can get your doctor to write you a prescription for one and then just call and have the unit delivered. If you go the refurbished route, you will probably spend between 400 and $500 to own one.