A manual device intended to reduce the symptoms associated with negative air pressure in the middle ear by increasing air pressure in the Eustachian tube, to counter/prevent certain physical states or thick fluid accumulation behind the eardrum. It typically consists of a manually-operated deflator/inflator (e.g., balloon) connected to an applicator (e.g., nosepiece, mouthpiece, face mask). This is a reusable device typically used in the home.