The dynamics of COVID-19 cases in Europe shows a novel coronavirus SARS-CoV-2 is able to photoactivate by a natural solar radiation. This means, there are optical-sensitive modes in a spectrum of natural oscillations of the RNA. This paper analyses the dynamics of RNA optical electrons to determine spectral location of the optical-active modes. To do it, we perform the model-independent estimation (what is correct for all varieties of SARS-CoV-2, both known and new ones) as well as model-dependent simulation reveal the location of RNA optical-active modes at several GHz. This allows to use Raman scattering to detect the presence of COVID particles in the ambient air or in a patient saliva sample for fast diagnosis the infection. To enhance Raman signal, we propose to use the photonic crystal as an active Raman substrate. This way, the giant density of optical Tamm states at photonic crystal bandgap edges can be used to resonantly amplify the local (near surface) electromagnetic field to detect a presence of SARS-CoV-2 virions even in traces. This photonic crystal scheme allows to make a portable test device to not only express-diagnose COVID-19 with an ultimate precision, but also to destroy natural oscillations of coronavirus RNA and break down virus activity. This makes possible to kill the virus inside a human body by an optical way.