Are Electronic Cigarettes Poisonous to Dogs? Secondhand smoke and e cigarette aerosol exposure in dogs and cats: A scoping review with implications for smoking cessation among pet owners Is It Dangerous To Vape Around Pets? Cronulla Vet Clinic Does smoking harm my pet? One of our customers has had first hand experience of this recently. One cigarette butt can contain enough nicotine to poison a dog. Especially puppies and smaller breeds. What can happen Is Vaping Around Dogs Bad? Vet Approved Advice Dogster