Smelly shower in bath and same smell in another bath
I have a musky smell coming from one of my shower drains. The strange thing is there is the same odor in my powder room which only has a sink and toilet. The smell doesn't seem to be coming from either sink or toilet.
In shower, I have removed the drain cover and removed all hair, etc. from drain and poured baking soda into drain and left all day. That wasn't successful. Today I poured about 4 cups of bleach down the drain. Still have odor. Does anyone have any idea what may be the problem?
Tlord:)