Since the odor in feces is usually due to bacterial action, I would guess that the presence of adequate bacteria to do the work of full digestion is what is so smelly and that the one who perhaps doesn't digest as well perhaps doesn't have adequate bacteria?
__________________  Jeanie and Tibbe One must do the best one can. You may get some marks for a very imperfect answer: you will certainly get none for leaving the question alone. C. S. Lewis |