Abstract: Apparatus disposed inside the flushing tank of a toilet for drawing and entrapping malodorous elements of air from the bowl of a bathroom commode. The malodorous air is drawn from the bowl through the flushing tank overflow pipe, and forced through an easily replaceable cartridge which contains a battery and a malodorous air entrapping chamber. By the location of a portion the housing and air passage-way below the water line of the flushing tank, filter and battery size are increased for longer filter and battery life.The low pressure air seal provided by the water residing between a pipe of larger diameter than the diameter of the overflow pipe has a length sufficient to permit the low pressure air seal to form at the beginning of the refilling cycle, thus shortening the functional recovery time after flushing.An air duct with an adjustable portion provides adaptability to different commode tank designs.