Flavored e cigarettes modulate embryo development, fetal growth, and potentiate early fetal demise without nicotine Communications Medicine If you vape, you inhale a lot of harmful substances. These can damage your heart and lungs. 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 Vaping: Safer than cigarettes or a new health crisis?