That will identify if EM energy in general is harmful--and I think it's pretty clear that it is not. But what happens if 1 person in a million responds to Wi-F

That will identify if EM energy in general is harmful--and I think it's pretty clear that it is not. But what happens if 1 person in a million responds to Wi-Fi frequencies like nails on a chalkboard? It wouldn't need to actually be directly harmful.