Did you know that carbon monoxide is a toxic gas that you cannot see, smell, or taste? That's what makes us so dangerous. If your home has any kind of fuel burning appliance or attached garage, you need a carbon monoxide alarm. >> That's right. On every level of your home, because a working carbon monoxide alarm is the only way to know if carbon monoxide is in the air. Make sure you test it monthly. What if the alarm starts beeping? >> Get outside with your family right away and call 911.