Gaseous odor accumulation: Smelly farts are usually the cause of gas produced by colonic bacteria during fermentation of unabsorbed food residues arriving into the colon. The problem is when passing gas becomes excessive or overly foul-smelling. How can you tell if gas is just an inconvenience or a sign that something more serious is happening? This gas is produced during the digestive process when the body breaks down foods containing sulfur.The sulfur content of different foods can vary significantly, and this is why sometimes flatulence can be very smelly, and at other times, it may have almost no smell … These high fiber foods are … These include beans, sodas and other carbonated drinks, sugar … Foods: Perhaps the most common reason why most people experience smelly flatulence. Certain foods tend to increase the levels of intestinal gas, but not all of them cause foul-smelling flatulence. Changes in the microflora: Gas also depends on the composition of the colonic flora, in other words the type of bacteria living within the digestive system. Causes of Smelly Gas: Sulfate in the foods we eat is the cause of most foul smelling flatus. When you think of foods that cause gas, beans are probably at the top of the list. Common causes of foul-smelling gas can be a food intolerance, high-fiber foods, certain medications and antibiotics, and constipation. People can also be intolerant to (and pass smelly gas from) other sugars, including sucrose (table sugar) and fructose (found in fresh fruit, corn syrup and some processed foods). The main cause of smelly flatulence is the presence of a gas called hydrogen sulfide. Having a tumor in the colon can lead to blockage, which can cause a gas build up and bloating. The longer the food is kept in the digestive tract the more it causes smelly gas. There are many common foods that may produce gas. Common gas-producing foods and substances include: Beans and lentils; Vegetables such as cabbage, broccoli, cauliflower, bok choy and brussels sprouts (cruciferous vegetables) Bran; Dairy products … Certain digestive system disorders, such as irritable bowel syndrome or celiac disease, may cause — in addition to other signs and symptoms — an increase in gas or gas … Be aware that the foods high in fiber are usually major gas producers. Certain bacteria in the colon make sulfide gases in very tiny amounts and these gases have a distinct odor when passed by the body. Beans contain a lot of raffinose, which is a complex sugar that the body has trouble digesting. Controlling flatus smell starts with monitoring the amount of sulfate containing foods and … Foods that cause excess gas. Many conditions can cause diarrhea and gas.Some examples include lactose intolerance, irritable bowel syndrome, food poisoning, giardiasis, and rotavirus.Reactions to antibiotics may cause these symptoms in some people, but it is important to take all antibiotics as prescribed unless you are told otherwise by … Does your gas occur after eating? Everybody tolerates foods differently. Some foods that are major gas producers for some people may cause normal gas for others. An increase in gas or gas pain may result from eating foods that are more likely to produce gas. This list should be used as a guide to help determine the best gas reducing diet for you specifically. Intestinal gas is a normal by-product of digestion, but excessive gas can cause loud, smelly flatulence, which can be both uncomfortable and downright embarrassing. Often, relatively simple changes in eating habits can lessen bothersome gas. Foods that cause gas in one person might not cause it in another. This is usually due to the lack of fibrous materials in the diet, and is the most common cause of excessive smelly gas in pregnant women.