Wellness Influencers Say Smoking Mullein Leaf Is a Lung Cleanse. Doctors Say There's a Much Healthier Alternative. Mullein for asthma: What are the benefits? Lung Cleanse Vape Wellness Influencers Say Smoking Mullein Leaf Is a Lung Cleanse. Doctors Say There's a Much Healthier Alternative Mullein: safe to smoke dried and crumbled? Lung Cleansing Pulmonary Detox Aroma Diffuser Stick Natural Mullein Leaf Vaporizer for Quitting Smoking & Lung Detox Herbs