Another possible cause is bowel toxemia. Bowel toxemia normally starts with the pre-existing hypo chlorhydria. Proteins that are not digested and broken down adequately in the stomach from the substrate for bacteria and yeast to proliferate, which produce excess amounts of toxic metabolites. The liver detoxifies toxins produced from the gut. If the liver is not functioning optimally or if the amount of toxin production overwhelms its metabolic capacities, the toxin can enter systemic circulation. The sweat serves a major excretory function and if the kidney or liver is dysfunctional the body will use the skin as a route of elimination. The toxic metabolites usually have a strong odor that can be smelt on the breath and the urine as well as in the sweat.
Reference: Weatherby, D. (2004). Signs and Symptoms Analysis from a Functional Perspective. Jacksonville, OR: Bear Mountain Publishing