Difference in Direct Inhale & Mouth to Lung Vaping NZVAPOR NZ How to Inhale a Vape: MTL vs DTL Beginner Guide 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, Vaping is now being linked to a rare and irreversible lung disease. Scientific evidence shows that inhaling e cigarette aerosols can trigger severe inflammatory injury deep inside the lungs, damaging the alveoli, MTL Vapes: Fixed draw resistance & Advantages for those switching