Concerning the stinking stones, I always recall a comment Joel (Barefoot) made some months ago which suggested that the more polluted the body the worse the stench. Apparently, the worst smell came from cancer sufferers who excreted rancid black stones.
This is as encouraging as it is interesting! To date I have not witnessed a huge amount of "stones," and the smell has been almost non-existent. Perhaps there are a few stinkers to come... ;)