Carbon Monoxide can happen at any time. Here is link to the full article from Andover Insurance on how to lower the risk of Carbon Monoxide in your Home and a small snip it of the article below on Signs of Carbon Monoxide. Click Here for full article
What Are The Signs of a Potential Carbon Monoxide Problem?
Since carbon monoxide in your home cannot be detected by sight or smell, placing CO detectors in a variety of locations is critical. If a carbon monoxide alarm goes off, everyone in your house should immediately get to a fresh air location, preferably outdoors. Then, call 911 or your local fire department and do not reenter your home until emergency service responders say it is safe to do so.
In addition, you should be on the lookout for the following red flags—and call for service immediately if you spot them—because these signs may indicate your home has a carbon monoxide issue:
- Streaks of soot around fuel-burning appliances or soot falling into a fireplace.
- Absence of an upward draft in the chimney.
- Excess moisture and condensation on windows, walls, and cold surfaces.
- Rusting on flue pipes or appliance jacks.
- Flames that burn orange or yellow—rather than blue—when appliances are in use.
- Damaged or discolored bricks at the top of the chimney.
- Trace odors of exhaust gases that often accompany a carbon monoxide leak.