Vanderbilt University Medical Center (VUMC) is reminding Tennesseans to be aware of the risks of carbon monoxide poisoning during the holidays. As colder weather sets in, many turn to fuel-powered heaters, which can pose a danger if used indoors. Ashley Panas, Chief Flight Physician for LifeFlight, stresses the importance of proper ventilation with propane or coal heaters. Symptoms of poisoning include dizziness, nausea, and flu-like signs without fever. If multiple people show these symptoms, suspect carbon monoxide poisoning and seek fresh air and medical attention immediately.