Mullein Peach Diffuser Mully Mullein Peach Diffuser Mully Mullein (pronounced mull in) is a tall, flowering plant that grows in many parts of the U.S. and Europe that has been used in herbal medicine since ancient times. People who have been herbs for lungs Walgreens Herbal Diffuser Vape Amazon.com : Herbal Diffuser Pen, Detox Diffuser with Mullein, Thyme & Mint for Better Breathing, All Natural Swap Mullein for Smoking Etsy