As if there wasn't enough to worry about already, squirrels are now vaping in various major cities across the globe. Wildlife experts warn that this behavior could pose serious danger to the Vaping Essential Oils: Hidden Health Danger You Need to Know About American Lung Association Nicotine and Digestion: Does Nicotine Make You Poop? GoodRx 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 Vape Free Gut: Ditch the Vapor, Restore Your Digestion Can Vaping Make You Sick? UPMC HealthBeat