Your burps may smell like sulfur because of the medications you are taking. This includes sulfur medications for such conditions as bladder infections. Your burps may also smell like sulfur because you have eaten a lot of protein based foods and your body has created a build up of acid. Finally, you may be suffering from a condition known as Helicobacter Pylori infection. This is an infection that begins in childhood. However, most people may not realize that they have it. This infection is often the reason why people develop peptic ulcers. The infection is caused by the bacteria known as Helicovacter pylori. The infection can cause sulfur or a rotten like egg taste or smell when one burps and stomach discomfort.