Pure nonsense. There are not trillions of cells available to a virus. Viruses are limited by cell type, temperature, body region, cell function, among others. There are a very limited number of targets for viruses as opposed to billions of nanoviricide particles completely unrestricted by membranes and other semipermiable barriers. A nanoviricide can even cross the blood brain barrier, something even viruses mostly can't do.
You are so off the mark here.