Everyone farts and everyone burps; there's no way around it. If you eat, you produce gas as the bacteria in your digestive system break down those foods. On average, you're passing gas anywhere between 14 and 23 times a day. Think about that; you could be farting or burping once every hour [source: Jaret].
The gas producing those farts and burps contains carbon dioxide, oxygen, nitrogen, hydrogen, and sometimes methane -- and sometimes sulfur (only in farts, though) [source: National Digestive Diseases Information Clearinghouse]. Certain foods will cause your body to produce more gas, and those include high-fiber and sugary foods, such as those notorious gas-encouragers: beans and broccoli. For some people, wheat or dairy -- and products that contain wheat or dairy -- can cause also contribute to gassiness, belching, farting and abdominal bloating because their bodies can't properly digest those foods. Often the cause, though, is nothing more than swallowed air.