Secondly, telling anyone they cannot eat gluten while you are on the premises or having them shower and change clothes before getting close is about as close to full blown anxiety as I have ever heard. Celiacs, no matter how sensitive, do not need to live in a bubble, unless they want to but it gets very lonely in the bubble. Saying you got glutened by a bag of your brothers clothes when he was absent is just ludicrous and not something the newly diagnosed need to worry about...ever, unless you are in the habit of eating clothes.
Also, I believe that yolo self-identifies as someone with a high sensitivity to gluten. She is relating her experience, and if the original poster is someone who also suffers from high sensitivity to gluten, this may be useful. Certainly, it's common on this board to suggest avoiding hair and skin products with gluten in them, which I thought was really out there when I first heard it. I also don't think it's outrageous to think that anybody with a gluten sensitivity could be glutened from laundering the clothes of someone who eats gluten. I've seen my husband covered in crumbs after eating a sandwich. So, yeah, if she is handling clothes and shaking crumbs out of them and especially if she has a high sensitivity to gluten than, yes, it's entirely possible.
I imagine as someone who self-identifies with high sensitivity to gluten, a reply like this on a message board devoted to gluten intolerance would make her feel very lonely, which is really sad and arguably unnecessary. I'm personally grateful that I'm not as sensitive as yolo.