cigarette smoke alarm Detector Smoke Sensor for Home Hotel - Smoke Detector, Heat Detector The unit is small and perfect for indicating Cigarette Smoking in a closed room or space Cigarette Smoke Detectors by Radal

I haven't actually tested this myself however, but only discovered the functionality while poking around the fusebox with a multi-meter today

The basic problem with them is identified in this thread on the Guardian

It may also be possible that fewer Americans know smokers or people with tobacco-related disease, and this also could decrease perceived harm, he said

[5] The particulars will vary depending on the type of room you're smoking in, but a tabletop fan will work well enough, provided you have it pointed at an open window or duct

Learning what nicotine abuse looks like, its side effects, and how to detox off nicotine and get help for addiction are essential to maintaining this long-term, drug-free lifestyle