Sounds like you have bacteria overgrowth. Go see a gastrologist doctor. Also, you may have parasites. I had that problem along with smelling like feces. This doctor online told me it was Malabsoption. My body does absorb nutrients. That what causes the smell. So, I started taking vitamins B12 1000mg or more, magnesium 1000mg, zinc 400 mg, iron, also probiotic. Take 20-60 billion mg. You can never overdose on probiotic. Take niacin 1000-1500 mg a day. Take the Niacin flush kind only. Your body will feel got and flush, it cleans the toxins, skin, etc...out of body. Also, take charcoal tablets it cleans toxins out of body. Hope it goes well, let me know.