Hi - Wondering if anyone has a solution or ideas about our cold water
problem. We get a strong bad smell (sewer-y) in both bathrooms. This
affects the cold water only. It does not affect the cold water in the
kitchen or showers.

Possibly pertinent: we did some remodeling about 3 yrs ago which
involved plumbing. In upstairs bathroom, we replaced the toilet,
changed the vanity and sink, and re-did the shower. At the same time
we changed the sink in the downstairs bathroom.

Thanks in advance for any insights.

Kate