Keeping Your Pets Safe from Nicotine Poisoning American Lung Association 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. 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. Why Smoking Around your Pet is so Dangerous First Aid for Pets How Second hand Smoking Affects Pets