My husband woke up this morning bloated an he burped an it smelled like rotten eggs then he vomits an has watery bowel movements that smell horrible.

Pain, diarrhea: Your husband has an illness, possibly an infection and should call his doctor to be examined and treated.

Food Poisoning: This surely sounds like food poisoning or an unusual presentation of the stomach flu. Rest and hydration are the next indicated thing.

Sulfa smell: This is usually a result of bacterial or parasitic infection and should be taken seriously. Has there been travel out of the country? How long have these symtoms been present. I recommend a full medical evaluation including blood and stool testing for infection.