Abstract: A smoking pipe has a a combustion bowl, a mouthpiece, and an inhalation conduit. An inhalation check valve is connected to the inhalation conduit and positioned between the bowl and the mouthpiece, oriented to pass smoke of combustion in one direction from the bowl to the mouthpiece. An exhalation check valve is positioned between the mouthpiece and the atmosphere, and is oriented to pass exhalation in one direction from the mouthpiece to the atmosphere. A body is partially fillable to retain water, and the inhalation conduit passes from the bowl into the body and extends to an upper area inside the body, and then turns to extend towards a lower area inside the body, terminating in an open end. The inhalation conduit has a second portion that has an opening in the upper inner area and extends to the inhalation check valve.