silver and salt do not mix. here is a guy who used silver nitrate in his sinuses:
here is a nice shock article from the state of florida. they give no particulars but simply state that silver caused this:
here is stan jones, the libertarian senate candidate who was making CS with salt water:
and rosemary jacobs, the other famous "victim":
rosemary and stan are the two most famous cases not because their cases are typical but because they are so rare. it takes a lot of the wrong kind of silver to get this condition. i also to not believe it is permanent if one made efforts to reverse it.
this link gives another case where a man found the instructions to make Colloidal Silver on the internet. any bets on whether he was using a pinch of salt in his process?