I've never had any sign whatsoever of a food allergy but I suspect the principal of 1 allergy triggering sensitivity to other (food) stuff is exactly the same.
I still get hay fever type symptoms out and about, but that is also well damped down so as not to be the nightmare it once was.
Each to their own, so ignore us and make sure its not a symptom of something like pneumonia, a partially collapsed lung etc which from my experience too, goes alongside breathing trouble.
Reminds me, check your temperature. Increased temperature was the main thing that, years ago, told my doctor I'd had likely gone down with pneumonia and a collapsed lung.