Vaping is often marketed as a safer alternative to smoking, but many vape products contain nicotine, harmful chemicals, and heavy metals that can harm developing brains and lungs. High concentrations of flavor chemicals are present in electronic cigarette refill fluids Scientific Reports Vaping Student Health & Well Being Dynamic Chemistry and Toxicity of E Cigarette Aerosols and Their Product Waste Chemical Research in Toxicology Content and quantity of the chemical substances in e cigarette Download Table Chemicals