Old_boat wrote:
I installed a new bathroom vanity and sink. Ever since, whenever you run
HOT water in the sink, you get a strong odor of sewer gas. I have taken it
apart several times, cleaned it, ran bleach water down the drain and
overflow, checked to make sure the drain pipes were correct, etc. Whatever I
do, the smell returns in a couple days. Any one have any Ideas what I can
try next?

i think it's just a fluke that you are getting the smell now. it may
have happened over time regardless if you changed the taps or not. i
had the same problem. the cause is sulfide - unharmful bacteria but
smells like rotten eggs. most people don't bother to filtrate their hot
water but i did. pick up a whole house "sulfide eater" and install it -
no more sulfide.

gl