How vaping impacts your dog or cat Animal Wellness Magazine Secondhand smoke and vapor is smoke from burning tobacco and nicotine products, like cigarettes or vapes. There is no safe level of exposure for people or pets around it. Protect you and 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 dangers: Secondhand vapor, nicotine poisoning, burns