Lake Schools looking at K 9 to detect vapes and THC Can Drug Dogs Smell Nicotine? Everything You Need to Know Can Drug Dogs Smell Unopened Vape Pens? Vaping: Get the Facts. Protect Your Future Anne Arundel County Health Department Can Sniffer Dogs Smell Weed Vape Pens? 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.