As National Carbon Monoxide Awareness Month gets underway, the Delaware State Fire Marshal’s Office is calling on residents to take steps to protect themselves from what officials describe as a “silent and invisible threat.” Carbon monoxide (CO) poisoning kills hundreds of people and sickens thousands more across the United States each year, yet remains one of the most preventable household hazards.
Carbon monoxide is produced by fuel-burning appliances such as furnaces, fireplaces, generators, and grills, as well as vehicles left running in enclosed or partially enclosed spaces. With no color, odor, or taste, CO cannot be detected without an alarm — a fact that fire officials say makes widespread use of detectors critical.
Exposure to high levels of CO can be deadly within minutes, while low-level exposure over time can cause lasting health issues. Despite the danger, many states still do not require CO alarms in homes, hotels, schools, or other common gathering spaces.
Health experts warn that symptoms of CO poisoning can be difficult to recognize. They may include headaches, nausea, dizziness, confusion, shortness of breath, fatigue, blurred vision, and, in severe cases, loss of consciousness.
To reduce the risk of carbon monoxide exposure, the Fire Marshal’s Office recommends the following safety measures:
- Install CO alarms in homes, garages, workshops, and other enclosed spaces, especially near fuel-burning appliances and sleeping areas.
- Carry a portable CO alarm when traveling, as most hotels are not required to provide them.
- Learn alarm tones: CO alarms beep four times in a row; smoke alarms beep three times.
- Test alarms monthly, replace batteries regularly, and follow manufacturer guidelines for replacement.
- Schedule annual inspections for furnaces, chimneys, and fireplaces.
- Operate generators outdoors and at least 20 feet from buildings; never use them indoors.
- Avoid using gas ovens or ranges to heat living spaces.
- Do not run vehicles inside garages — even with doors open — and always move running vehicles fully outside.
- Keep appliance and vehicle exhaust vents clear of debris, snow, and other blockages.
Additional information on carbon monoxide risks and prevention is available through the National Carbon Monoxide Awareness Association.
