Vaping Impairs Vascular Function, Even Without Nicotine, Study Finds If you vape, you inhale a lot of harmful substances. These can damage your heart and lungs. No Smoking sign now include Vape and Marijuana : r mildlyinteresting Vaping is often marketed as harmless. Flavoured. Trendy. Safer than smoking. But the reality is far more serious, especially for children and teens. When kids vape, they are inhaling addictive nicotine and