Air sanitizers can be effective in reducing the concentration of airborne viruses, including COVID-19, but their effectiveness depends on various factors such as the type of sanitizer, its design, the size of the space, and the ventilation system. While air sanitizers may help reduce the risk of transmission of viruses, they are not a substitute for other preventive measures such as regular handwashing, wearing masks, and maintaining physical distance. It is essential to use air sanitizers in conjunction with other preventive measures to minimize the risk of COVID-19 transmission.