If he is getting glutened, I wouldn't think the couch would be the first thing that popped in my mind. I would guess eating out, grandma's house, or playdough. Maybe even another food sensitivity. My GI doctor had a good long talk with me about keeping my sanity after my husband told her I was going crazy. And he wasn't joking. I had accidently given her something with hidden gluten in it (not on label as rye or barely) and it freaked me out for days. I saw everything as poison to her. She (who is a strict doctor) told me, "One cigarette a year won't kill a person. One cigarette a month won't kill a person. It is just like that with gluten. Oh, she might have a little diarreah but it won't kill her to get accidently glutened." So when I looked at it that way, I lightened up. Not with my gluten but with my obsession that everything was going to cause lymphoma.