The Truth About Vaping and Smoke Alarms Can A Vape Trigger Smoke Alarm Can Smoke Detectors Detect Vapes? Find Out Now Airbnb Vape Detectors: Complete Guide for Hosts 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 setting off a smoke detector using a vape