8 years sufferer, now im cured
This is for poop/fart smelling breath with nasal bb. If you have an experience with people saying something like "who farted" after you just talk, or someone says you smell like shit, then read this as we have the same experience.
I actually vented here 4 months ago abt my condition but now im really ok guys. nasal bb gone and yes, bb still there but just occasionally and i think that is nnormal for humans esp when you eat foods that can trigger bb. My main culprit is tonsil stones. Those shitty stuff. I just check them EVERYDAY. "bUt i cAnt find AnytHing when I check my tonsil--" stfu because you wont smell like shit if you dont have tonsil stones. Do something about it. you dont need a tonsillectomy. Use your fingers or cotton buds. Massage your tonsil stones until something pops outside. Do not stop. "bUt what if it bleEds--" shut up and stop if you cant tolerate it anymore. IT IS ALL COMMON SENSE. After that you tongue scrape, mouthwash, floss EVERY GAP IN YOUR TEETH (THE MOST IMPORTANT PART), lastly you brush your teeth normally.
When i first started to check my tonsils everyday, the left side stinks really bad like fish odor but the right side has no smell. So i used my common sense to clean it everyday, hoping the smell of it would disappear. And yes it did. It actually removed my nasal bb and bb too. I think it took me a month of cleaning my tonsil consistently until the smell was removed in the left tonsil. I still clean my tonsil EVERYDAY until now. Im just here in reddit sharing my thoughts bcs im lonely and bored.
In summary, you just need a good oral hygiene (NOT JUST BRUSHING BUT ALSO FLOSSING AND CLEANING YOUR TONSIL!). This works for poop/fart smelling breath. Cuz that's my condition for almost 9 years. If you have any questions, dm me and ill send you my discord server (alot of sufferers there too). Life is really fucked but at least i dont get any weird reactions from people anymore