like feces. I read on Webmd.com and a few other sources that this only usually happens if a person has been vomiting. Which I have not been. The first time it happened was when I'd eaten out at a restaurant. The food pretty much soured in my stomach and gave me severe diahhrea as well as the horrible smelling burps. Now it seems that it's basically on a whim when this will happen. I don't know what will cause me to burp up this smell
Sounds like it could be an infection. Perhaps your food is not digesting properly...maybe the Nexium worked too well?
I would go and see a doctor to make sure it isn't something serious.
When I read the part about the first time it happened, it sounded like food poisoning
You may want to consider asking your doc to check you for the presence of H. pylori. If that's been done and you're negative, it may be time to request an upper endoscopy to check out the physical status of you esophagus, stomach and upper duodenum.