Is It Okay To Vape Near My Pets? All Pet Animal Hospital 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 Secondhand smoke and e cigarette aerosol exposure in dogs and cats: A scoping review with implications for smoking cessation among pet owners Secondhand smoke and secondhand aerosol Nicotine Poisoning in Pets Exposure to cigarette smoke found to increase cancer risk in dogs