Posted by Alan on December 14, 1999 at 19:06:37:
I have been getting a foul smell from my sink drain upstairs. Its smells like stale musty water not sewer gas. It only smells when the downstairs shower or toliet is used. Snaked downstairs drains and no plugs in the lines. Vent pipe dosent appear to be blocked unless its at the very bottom.Crawled up on the house and looked down.Thanks for any help in advance.