via liveleak.com
Live Leak
How quickly a fire takes hold
See how quickly an unattended cigarette takes hold and ignites a fire that could potentially burn down your house. Supplied by the MFS
たった一本のタバコがソファに燃え移り火事になる様子です。怖いですね。（禁煙センセイ）
＜参考＞
火事の心配が減るー禁煙の利点
http://smoke-free.cocolog-nifty.com/blog/2009/05/post-77d7.html