the stinky/unhygienic "carnelia ring" crowd may be stinky for two reasons… just my own educated guesses based on running into a few of these people and and what I've read…
a) they may think that bathing makes it difficult for demonic entities to inhabit/possess their physical body. bathing changes the electrical charge in the body's cells - something to do with ions or ionization
b) they may be choosing the "carnelia" (carne = meat/flesh) stone as a sign to other occultists that they are cannibals. I imagine that chowing down on humans would tend to make one stinky.