causes smelly flatulence
1 Certain types of food are known to cause flatulence and bloating. 2  Foods that are high in carbohydrates and starch such as beans, cabbage, broccoli, white bread and refined flour can result in an excess of gas trapped in the digestive system.3  Many of these foods can cause exceptionally foul smelling gas as well. Many of these foods can cause exceptionally foul smelling gas as well. 2  Foods such as red meats (especially ground beef) and fatty foods release gases such as hydrogen, methane and carbon dioxide during the digestion process.