I am deploying equipments to test the PSI in the air to test all particles in the air, even coronoavirus and filter and mark them with visible green light so they will not be a hazard anymore, these multiple drones must be small enough to go into confined spaces, and the main equipment for verification need not be enclosed in the drone. The marking process is not so important, it is more important to detect the coronavirus in the air. Contributed by Oogle.
