The University of Maryland Medical Center uses this chamber to treat several conditions, including carbon monoxide poisoning. Right now, the hospital is seeing a lot of that. "In any given year, we treat about 60 patients with carbon monoxide toxicity. Already, in the last month and a half, we've had 20. So we're just on this trajectory of treating many more patients," Dr. Kinjal Sethuraman, medical director for the Center for Hyperbaric and Dive Medicine, told WMAR-2 News' Elizabeth Worthington on Friday. Mother Nature is mostly to blame. The colder weather can lead to overworked furnaces. Faulty heaters or generators can also pose a risk.