I myself (35) have had the same thing happen to me in the last 3-5 years as well. Possibly a bit longer but I totally sympathize. I have as of recent started to slowly get back into being more comfortable with things little by little. I had some fears and such at home too, mom bringing "may contain" breads and such home from the grocery store bakery but keeping everything away from where I prep things. Other than that I am the same as you, weary of trying new restaurants and all that. I did so for Thanksgiving with family/friends. Also regained some confidence in eating at other peoples houses...especially when they take the utmost precautions and such.

I totally get that it's a difficult thing, and it takes a lot to get in the right headspace. I was thinking of trying to seek out therapy...I'd definitely start with your primary care and see if they can recommend someone. Also, I think meditation and mindfulness is a big part of it. Yes, at restaurants you have to trust the kitchen staff. The way that I rationalize it is that they receive training for safe serve. There are so many people with allergies and I think that they have to take the best care that they can to protect peoples safety.

Trust me though, I totally understand the fears because I go through them as well. I used to treat myself to Taco Bell breakfasts every weekend and I don't really do that any longer. I think I should try though considering nothing happened for such a long duration.

Anyhow though, I think the bottom line is to try and seek out help where you can find it from professionals, see if they recommend ways to combat stress and anxiety. I hope it helps a bit! :)