
Cold Climate Impact on Air-Pollution-Related Health Outcomes: A Scoping Review
In cold temperatures, vehicles idle more, have high cold-start emissions including greenhouse gases, and have less effective exhaust filtration systems, which can cause up to ten-fold more harmful vehicular emissions.
Airborne illnesses are the most contagious because the air all around you is contagious and in a continuous airflow. You don’t want anyone to breathe in the infected air. In severe cases,

