Try to Google what is known about the virus next time. The genetic sequence of the virus was published very early, as were electron microscope images of the virus. Impossible to do if something doesn't exist.
A PCR test is extremely accurate in detecting minute quantities of a specific genetic material. And a PCR test is done in a laboratory, not through the nose. What do you even mean by a RNA vaccine is done exactly the same as the PCR test?????
Plenty of research about masks and/or social distancing.
But it is soooo easy to spread nonsense via an internetforum......