According to the National Fire Protection Association, the use of supplemental heating equipment such as space heaters, is the leading cause of home fires from December through February, and the second-leading cause of home fires year-round. That's why it's important to take adequate measures to protect yourself when using space heaters. Keep the following safety precautions in mind when using such equipment.
For additional information on winter weather safety and air quality, please, go to https://www.epa.gov/emergencies-iaq/winter-weather-and-indoor-air-quality
Source: https://www.epa.gov/emergencies-iaq/winter-weather-and-indoor-air-quality