Is Mullein Tea Good For Smokers Betterbrand History and Cultural Significance of Mullein MOUNTAIN SMOKES Lets talk about Mullein , Mullein is one of my favorite herbs for the respiratory system. Its known for being antispasmodic and anti inflammatory, helping to relax tight, irritated tissues and Wellness Influencers Say Smoking Mullein Leaf Is a Lung Cleanse. Doctors Say There's a Much Healthier Alternative.