Under the right conditions, air purifiers can assist in reducing contaminants in the air in an indoor or confined space. They work by creating negative pressure in a room that forces airborne contaminants out a room through air purifiers’ outflow kit. However, if the viral infections have several transmission channels, an air purifier alone cannot protect you from COVID-19 or other contagious airborne pathogens. Some air purifiers like the Homedics TotalClean 5-in-1 Small Room Air Purifier have a built-in UV-C light that eliminates 99.9% of viruses and bacteria. Nevertheless, the Centers for Disease Control and Prevention (CDC) recommends that you use other best practices along with air purifiers to combat contagious airborne pathogens.