I believe that the protocol for nebulizing Iodine is NOT potassium iodide, but Iodine like magnescent iodine. I ran across a site that had all kinds of nebulizing protocol and it strongly cautioned against the KI. I'll see if I can find it and post the link. I think Trapper has nebulized megnascent.
There was a member on Stephanie Buist's yahoo Iodine site that had a nebulizing experience with magnacent iodine and dmso for pneumonia and it cleared up quite nicely. It was an old post -- 3 years maybe. Yahoo's search function is basically non functioning and it may be impossible to find unless you go thru all the posts.