Johnson-Arbor, K., Quental, A., and Li, D. (2014). A Comparison of Carbon Monoxide Exposures after Snowstorms and Power Outages. American Journal of Preventive Medicine. 46(5): 481-486.
The authors reviewed all carbon monoxide cases reported to the Connecticut Poison Control to better understand the difference between exposure after a snowstorm and exposure after a "power loss storm." They found most exposure took place within the first day after a snowstorm and two to three days after the power outage storm.