Most e cigarettes (vapes) contain nicotinethe addictive drug in regular cigarettes, cigars, and other tobacco products. Nicotine can harm the adolescent brain which continues developing until about age 25. Using nicotine in adolescence Nic sick? Learn About Nicotine Poisoning & How to Treat it Jones Study shows vapes emit more lead than 20 packs of cigarettes yes, *20.* New research has uncovered a disturbing truth about popular disposable vapes: they may be more toxic than Why Do Disposable Vapes Make You Feel Sick?