Reminds me of the old joke between doctors...."the procedure was a success, unfortunately, the patient did not survive."
So, I have no doubt that "the experts" would consider 3, 4, or 5 masks even better. When the person dies of asphyxiation, well, see the previous quote. But, in that instance 100% guarantee that the person is not transmitting Covid!
I hope that's not what we need or, what we get!