The application that I invented is called "Protective shield". This is an application that helps you to fight viruses in the environment. To use this application you need a smartphone and your phone must be connected to the internet. When moving, you need to turn on the application. If there is a virus within a distance of 1.5m around you, the application will sound an alarm to warn you. You should not overdo this application and should only use it when absolutely necessary.