Stan Lech, a pharmaceutical chemist who has worked on new Flonase, Benadryl, Tylenol, Sudafed, Listerine, Aquafresh, and Sensodyne medicines over the past 35 years, developed the ImmuneMist nasal and oral cleansing system. ImmuneMist has emerged as a crucial tool for enhancing the body's immune defenses by removing viruses and bacteria that burden it. Today, it is crucial for wellbeing to keep the respiratory system clean and in good shape (which begins with the nose and mouth as entry points).