You might want to contact Klearsen, they were doing trials of Colloidal Silver (30 ppm) for MAC infections of the lung. They were knocking it out in 4 weeks, versus 18 months of Antibiotics . MAC is a serious lung infection, almost impossible to cure.
They use a Nebulizer to spray the silver in. I think the product was KC-287, which is just peppermint oil and Colloidal Silver .
These guy's might be able to offer some insight into using a Nebulizer with silver.