Hi Gary;
yes he used a humidifier during treatment and it sure helped.
That's good to know about the AC. He pretty much keeps it off; but we had a heat wave so they had to put it back on for a bit (boy was their house hot ha).
His voice was bad during and after treatment; 'then it cleared up'. Now it's back to being froggy and has been like that for a month. Anyone else have this? your voice cleared up then went back to being hoarse raspy froggy ?