Do You Know What Causes Sulfur Burps?

It happened again last night: sitting outside, enjoying the evening when all the sudden burp. But this wasn’t the normal “excuse me” burp. This was sulfur, bubbling up from the depths of hell and escaping from my mouth. My eyes widened as both the taste and smell hit, and I said a little prayer of gratitude that no one else was sitting outside with me. Then I remembered that these burps never come in sets of one. It was going to be a long night. So, what causes sulfur burps? We don’t have them every day, so it’s not like this is a normal bodily function or something. Why do we…