Undigested carbohydrates usually aren't a big contributor to the odor of the gas. They are usually broken down into Hydrogen (why the breath test works) CO2 and Methane. None of those have an odor.The odors in gases usually comes from sulfur and that is found in high protein foods and some veggies (like onions and garlic). If you have sulfur reducing bacteria and sulfur that gets to the colon will be made into Hydrogen Sulfide or other gases that are very stinky at very small amounts. Usually people either have a lot of the sulfur reducing bacteria or a lot of the methane generating bacteria but not both at the same time, and some people have neither.Now sometimes a large volume of odorless gas can help carry those small amounts of stinky gas along, so that could effect odor transport from inside to outside.However things that normally deodorize the intestinal gas do not seem to work at all for many of those who suffer from FBO, which is why something like TMAU may be an explanation. Odors can come from a lot of different things. However some people do find that Pepto Bismol or other Bismuth compounds and those have been shown to bind sulfurous gases in the intestines of humans.
FBO and fructose malabsorption
hey folksi knew that some people with fructose malabsorption/intolerance reported smell's problems, i searched the net and found that the symptoms and troubling foods(wheat,leeks,lettuce,Sorbitol ,corn syrup....etc)of fructose malabsorption are very suggestive to be the cause of FBO unlike TMAU that is extremely rare or candida which is totally a myth ,any one has been tested for fructose intolerance?i would like to be checked but unfortunately i don't think that "hydrogen breath test" is present in iraq.
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http://en.wikipedia.org/wiki/Fructose_malabsorptionbtw/the 4-6 months of candida diet equals the time needed for a fructose free diet(so the fructase enzyme be regenerated in the intestine in the case of secondary fructose intolerance)Al barzenji/baghdad.
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this is a medical lecture it confirm that malabsorption syndrome(fructose,lactose...) can lead to incontinence,I found even more interesting disorder it's called "pudendal nerve neuropathy" can occur due to chronic straining. the pic below prove that Lg/FBO is a known medical condition(minor fecal incontinence) ,we just need to find a good colorectal surgeon and not tell him "only at work/school" thing ,saying "always" is better.
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if you have DPS you would notice it ,one of the main complaint of the patient of DPS is deformity look at figuresin this book:-http://books.google.com/books?id=8AOGqYf09...ome&f=falselook at what I've found in a memory-aid ,i extracted it from a medical site
I don't have prolapsed haemorrhoid as you do ,but fixing that might help you(excluding the complications of the operation),i believe that Lg/FBO is of multiple causes(single disease can't explain it).Causes of idiopathic fecal incontinence7(D)s1-descenterineal descent,rectal prolapse,prolapsed haemorrhoid. 2-destruction:-malignant tumors&irradiation3-debility:-illness&old age4-deficiency:-congenital abnormality5-damage:-wounds,child birth,surgical procedures6-denervation:-spinal injuries,neurological procedure &spina bifida7-dementia:-senility & psychological problems8-pudendal nerve neuropathy:-result from chronic straining,perineal descent and attraction injuries to the nerve.
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