Mrs D., I am sure that the bugs didn't stop at his chest hair. Yikes! I would have given him a bottle of Rid-X and a box of gauze pads, and sent him on his way fast.
I, too, would have gassed the places he was even near.
Right now I have those tiny Gnats and 'No See Ums" getting in my window screens, now that the A/C is off. They bite like crazy. Only me of course.
I tried everything to keep them out. They swarm at dusk outside, ever run into a bunch of them? Yet they enter the windows all day.

Any ideas?