Can dogs get high from secondhand smoke? What to know GreenState Is it risky to smoke or vape around companion animals? RSPCA Knowledgebase Are Dogs Who Live with Smokers More Likely to Get Cancer? Psychology Today Veterinarians warn that vape clouds in the home are just as harmful as regular smoke. Pets can develop allergies, coughing, and breathing difficulties, and citrus flavored e liquids are especially toxic, settling on fur,