My dear young friend Richard Young did inhaled arginine. And Patricia Chapman used it for her son Jesse. Here is a link to an article Patricia wrote:

http://uvicf.tripod.com/research/ArginineGSNO.htm

I am new to arginine, and have just been using a high dose arginine pill bought from the local health food store. I am interested in trying to find the best type of arginine for this use, and would welcome any info anyone has.