Could it be a chemical agent combined with RF or micowave field that activates it? Seems like pure microwave would cause a range of random hallucinations and s

Could it be a chemical agent combined with RF or micowave field that activates it? Seems like pure microwave would cause a range of random hallucinations and sensations. And also accidentally target people who were not spies / employees. I think biological agent that's activated by EMF is more likely.