Our boat is almost ready. It has new bottom paint and all deferred engine and generator maintenance has been done. We had a whiff of black water and knew the waste hoses were permeated. The temp went down and I assume the outlet on the tank contracted and now looking at a tank repair. We are prepared to replace carpet and linens and all cloth items. Also going to paint the bilge and the floor. I am concerned now ( since the smell has worsened) that all the head liners ect must come out. Has anyone been thru this before? I would love some advice. OB