Yes, this happens to me. I walk through grocery stores staying as far as possible from the bakery and bread aisles. I swell up if I walk too near a mini donut wagon. I got sick while sitting in a kitchen to have my daughter's hair done. Someone was cooking fish and I swelled up. You mentioned out that you have allergies. I just found out that for me it is because of super-sensitive allergies. That isn't celiac (which I also have) but I can't tell the difference, because of having both. I no longer eat out or in other people's kitchens. I just take my own food and eat it in my own car or outside in the summer. I have been told to try NAET desensitization for allergies. I am planning to read a book on it and talk to more people about it. Allergy desensitization shots are the medical option that I know of. I have heard these are both ineffective and dangerous. Some people say they were helped by them. I would just like to be able to sit around other people eating without having issues. I do know of a few others that must be this cautious. I recently tried to ask my physician if I possibly made up these reactions, but she could see the extreme swelling of body tissues and rashes. She felt that what I said and what she saw matched up. I really was hoping that I wasn't seeing what I thought I saw! It is amazing I think that my brain knows some things that I am not aware of. I mean I can react to barley flour being in the room even if it is just sitting there in an open container. WEIRD stuff. I had heard peanut allergies were that way, but previously did not believe it.
One thing you may want to look into is a MAST cell problem. Food allergies to things I was eating complicated my recovery. Are your reactions getting stronger or remaining the same? I am not sure of MAST cell and allergy connections, since I know little about them. So, here I am 2 + years into gluten free and still have more studying and discovering to do.
You are not alone, but many people with celiac state that they do not react to gluten unless they eat it! I need to say this so as newly diagnosed people with celiac do not get confused or upset about this. Some of us do and you are the people I want to help, as I know what it is like!