Not enough of that, some people including me, do also develop cross-reactions. Which means, that certain foods do have similar proteins like the allergens in the air and the already sick immune system reacts to them with symptoms.
During certain times even the healthy apple, nut or carrot might cause problems. The horror show goes on and turns life upside down. The well meant chamomile, coriander tea, propagating a better digestion and calmer mind, causes the body itching swelling, stress and shortness of breath. Isn't that unfair?
So it might be that during winter, one might be fine with a hint of ginger or a cooked carrot, but then later during pollen season they have to be avoided. It needs a lot of time, distinction, self–testing and alertness to find out, what, when, and how much of it is accepted.
I found out that routine helps. And that it helps to cook at home for oneself. So if symptoms occur, one always knows, what exactly was inside. It also helps, to establish some menus, that will always work. And to keep experiments small and rarely. But not to loose joy in eating.
Nose cleaning
Physical exercises