Disposable mouthpieces are usually issued for DUI blowouts, so neocoronaviruses are not usually transmitted when DUI blowouts occur. New Coronavirus is a highly contagious respiratory infectious agent that is often transmitted through respiratory droplets. DUI blowing is usually done by placing a disposable blow valve on the breathalyzer, inhaling deeply and blowing inward, taking care not to inhale backwards, a process that usually does not result in the transmission of NeoCornea virus. In order to avoid infection with the new coronavirus, it is recommended to replace the blow valve with a new one before blowing on the DUI, avoid sharing the blow valve with others, and dispose of the blow valve into the designated container after use, which is usually not a cause of infection with the new coronavirus when done correctly.