WHAT PARENTS NEED TO KNOW: We know that vaping is NOT a safer alternative to smoking, and by the time longevity studies on vaping come out, the damage on our teens' lungs How To Hit A Vape Pen Without Coughing If you vape, you inhale a lot of harmful substances. These can damage your heart and lungs. There are no safe tobacco products, and yes, that includes vapes. The sleek, battery powered devices heat up liquid packed with nicotine and other harmful chemicals that turn into an aerosol you inhale