Re: rotten egg odor

So I went to follow up with the GI doctor today and it didn't go so good. A week prior he told me to drink the kefir with yogurt mixture so I did. If anything it made the odor twice as bad and I broke out with skin rashes-I'm allergic to milk. I told him I had to leave work early because I got the explosive odor back The odor is now at it's highest level since I drank the Kefir. Before I could even ask for a course of antibiotics to clean out the bacteria and replenish with probiotics he got all ticked off and said this is not a problem with my gut because if it was, the smell would be gone from drinking the Kefir yogurt for 5 days. He told me to go to a dermatologist maybe I could find some help there. I told him again how concentrated the rotten egg odor is and he looked at me and said ya go to the dermatologist. Has anyone heard of anything like this?