Effects of Air Pollution on Chemosensory Dysfunction in COVID-19 Patients.

High concentrations of air pollutants such as PM, PM, SO, NO, and CO on the day of diagnosis increased the risk of developing chemosensory dysfunction from COVID-19 infection. This result underscores the need to actively prevent exposure to air pollution and prevent COVID-19 infection. In addition, policies that regulate activities and products that create high amounts of harmful environmental wastes may help in promoting better health for all during COVID-19 pandemic.