In a message dated 11/1/98 5:49:43 PM Central Standard Time, [log in to unmask] writes: << I don't know whether you use Sinemet? That can give black stains in clothes f.e. when drooling in your sleep. These stains are caused by Sulfur in the Sinemet. >> Hans, Thanks for the info. I was on Sinemet , but didn't know it produced sulfur. However, no stains . I still wonder if it might have been olfactory hallucinations. Also, I am wondering if there are any diagnostic or therapeutic implications which might be worth looking into, since several pwp have had similar phenomenon. Regards, WHJH