Think vapes are harmless to your smoke alarms? Not always. Vapor clouds from ecigarettes can drift into smoke alarms and trigger false alarms, especially in smaller rooms. Even lighter vapes can Does Vaping Set Off Smoke Alarms? Legion Of Vapers Can Vapor Set Off a Smoke Alarm? What to Know Dr.Dabber Do Vapes Set Off Hotel Smoke Alarms Can Vaping Devices Set Off Smoke Alarms? setting off a smoke detector using a vape Can Vaping Set Off a Smoke Alarm? Here's What You Need to Know