When this man is upset with his roommate, he asks Reddit:
I have Celiac disease. (M) I went on a gluten free diet. I them started having allergic reactions when anyone cooks anything with gluten.
I live with a roommate. He rents a room in my home. He has been here for a couple months. I laid out a roommate agreement before he moved in. It states he is to let me know if he cooks anything with gluten.