The exorcism is complete, captain. No more ghost.
I've cycled all the vapor out of the plumbing. You can now run water without hearing voices.
But what about the supernatural element?
Do you really want to believe that there was a supernatural element?
No, now that you mention it, I don't.
No more ghost! See how easy that was?
This is a clear abuse of the god-given gifts of repression and denial.