Tiled bathroom remodeled 3 years ago. Super strong mildew smell. Sink and shower drains clear and colorless. No subfloor staining any place below (shower pan, toilet flange, drains). Fan is vented correctly. Odor is "in the air" not in a specific area. AAV is fine, bathroom is kept hospital clean! No visual mold, no discolored grout. Attic above is insulated and vented properly...this is driving me nuts! Bathroom has no exterior common walls, I had 4 bathrooms done at the same time, by the same crews with basically the same level of quality and workmanship...no issues with the other three. Any ideas?
Cindy ~ Ann Arbor, Michigan