question: My 10 year old son has had two bouts of vile smelling burps followed by vomiting. The vomit doesn t smell like vomit. It smells like the burps. Like rotten egg. The vomiting is at night. The burps stop after the vomiting. The first bout he had a fever and loose stools and abdominal pain but the second was just burps all day then vomited at 4 am.