MTL vs RDTL vs DTL Full Guide and Kit Recommendations Mouth To Lung Vaping What Is It & Why Is It Still Important In 2019? How To Inhale A Vape Properly: MTL, DTL & RDTL Vaping Explained Vaping delivers heated chemicals directly into the lungs. Unlike air, vape aerosols contain fine particles, nicotine, heavy metals, and flavoring compounds that were never designed to be inhaled. Once inside the chest, It's not just small talkvaping and smoking can cause serious, long term damage to your lungs. Watch to see what's really happening inside your bodyand why prevention matters. Follow us for more health If you vape, you inhale a lot of harmful substances. These can damage your heart and lungs.