I do not think “load of bollocks” should be used in this context.
I am allergic to raw carrots, peaches unless they are canned or cooked, watermelon, cantaloupe and even grapes occasionally. I develop laryngitis, ( that means I become hoarse because my vocal cords gets swollen - laryngeal edema which is the most frightening as it can lead to laryngeal spasm and death. I also have minor swelling of tongue and lips. This has been confirmed recently with extensive tests.
When my husband was alive, he almost died twice in the 60’s nd 70’s until NIH confirmed diagnosis of gluten enteropathy, almost unheard of during those early years. There were no IGE blood test then, had to have a capsule swallowed until it reach. the second part of his intestine, ( duodenum) , confirmed by fluoroscopy and biopsy taken. When we are invited to dinner, I always bring along a dish that my husband can eat and for others to share. You will be surprised how people can tell us there is no gluten in their cooking, but they use canned soup for example on their green bean casseroles, use flour to thicken their sauces etc etc. Simple, for me, we just bring a dish for my husband without causing any fuss.
Now, I have alpha gal syndrome as well as other allergy from new tests that came out in 2017, confirmed October 2018.
When someone comes to my house and tells me they are allergic to nuts, I do not use nut products purposely in my cooking. I even questioned about Peanut oil which I use for frying but was told, they are not allergic to peanut oil. Perhaps it is the high heat that cause breakdown of the components. Who knows? However, when I added broad beans recently as marinade, my guest read that there is soya bean oil , and told me that unless it is fermented, she cannot eat it, I oblige by giving her something else from my fridge. I think the broad beans are fermented but I will never contest someone when she tells me she cannot eat my food. Better safe than sorry.
Simple solution, just serve her something else like the small amount of left over wild boar Italian ragu with rice as well as a piece of fresh tuna fitted the bill although she wanted to eat the tuna raw and I insisted that I sear it for her as I do not eat wild tuna raw unless I freeze it for. a day or two myself.
Hope you understand.