Well, it happened on me, too. I once leaned on the table and soon after, I smelled something sour on the edge of the table which was made of metal. I know it came from me. Although, the smell didn't remain that long but I believe it propagates through the air inside the room but didn't stick on walls.
I wonder which is better now between the two, can smell it or cannot. About the clothing, does this happen with every kind of fabric? In my case, even if I cannot smell it, I know it goes fine after I washed it. And I always wear cotton.
All I can say is I hope you find what you're looking for and we both end this nightmare. Just don't give up hope yet even if you cannot find answers immediately.