I am sitting on a couch that is coated with this goop. At least I am strongly suspicious of it, although not because anybody in my family has thyroid disease. I am suspicious because I remember many years ago (too many to name...you don't really want to know how old my couch is) I remember paying about 75 bucks extra for the couch and loveseat we bought to be treated to make them stain resistant. At the time, of course, it seemed like a decent idea. We wanted to protect our investment.
Now that it's time to buy a new couch I am much more inclined to lean the other direction and look for natural fibers and materials. It may be a bit of an overreaction but I am sure that I have spent a lot of time snuggled down under a blanket just like I am right now: 6 inches from the fabric surface, likely coated with PFOA.
It's a little icky to think about I must say.