When I was a child, the carbon monoxide detector in the hall was the terror of my life. It screeched louder than any other smoke detector, and it had an automated voice that said "fire, fire" and "carbon monoxide." Since it was in the hall, I draped a blanket over my head every time I walked to the bathroom in the middle of the night to avoid all chances of me accidentally looking at it. Fortunately it broke, and we dismantled it form the ceiling and placed it on a shelf in the garage. Many years later, I felt brave...because I plucked up the courage to touch it.