It's tasteless, odorless, colorless and what's worse -- it's the number one cause of accidental poisoning deaths in America. It's carbon monoxide -- a highly poisonous gas, formed by the incomplete combustion of carbon. It's produced by common home appliances, such as gas- or oil furnaces, clothes dryers, ranges, ovens, water heaters and fireplaces. While high levels of exposure to carbon monoxide can result in death, modest levels of exposure can cause flu-like symptoms which range from headaches, fatigue, nausea, dizzy spells, confusion and irritability. The good news is, that if a home is properly vented and is free of malfunctioning appliances, carbon monoxide will most likely be safely vented to the outside. Like a smoke detector, a carbon monoxide detector is easy to install and can be a real life-saver. And that's the On The House tip for today.