Do Vapes Set Off Smoke Alarms? What You Should Know A pair of hackers found that a vape detector often found in high school bathrooms contained microphonesand security weaknesses that could allow someone to turn it into a secret listening device. Can a Vape Pen Set Off Smoke Alarm? Facts & Prevention Vape Sets Off Fire Alarm: How Do Vape Detectors Work? Vapesourcing Do Disposable Vapes Set Off Metal Detectors? What You Need to Know