after using the upstairs shower a GROSS smell comes out of the downstairs bathroom???
when someone takes a shower a strong "sewer/sulphur" smell starts coming out in the downstairs 1/2 bath- very strange- and occasionally the smell comes from the upstairs shower as well but not always- any ideas??? thanks!
when someone takes a shower a strong "sewer/sulphur" smell starts coming out in the downstairs 1/2 bath- very strange- and occasionally the smell comes from the upstairs shower as well but not always- any ideas??? thanks!
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