Since the storm began, the Sudbury Fire Department has responded to an unusual number of calls for elevated levels of carbon monoxide in homes. With drifting snow, ventilation outlets for heating systems can be blocked, and cause dangerous levels of carbon monoxide in living areas. Also, be careful to clear snow from around exhaust pipes if you are sitting inside an idling vehicle. The Boston Fire Department reported a fatality today when a resident took a break from snow shoveling inside a parked vehicle with a blocked tail pipe. If you have any questions about carbon monoxide poisoning, or think you may have a concern in your home, please do not hesitate to call the Sudbury Fire Department for assistance at 978-443-2239.