Health Effects of Smoking and Vaping on Pets Magnets: Pets and Tobacco Products (7"W x 5"H) Central District Health Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center Can Sniffer Dogs Smell Weed Vape Pens? Vaping isn't just harmful to humans it's dangerous for our pets too! The aerosols from e cigarettes contain toxic chemicals and nicotine that can seriously harm pets if inhaled or ingested.