According to the Robert Koch Institute, about ten percent of Germans are allergic to animal hair. But apparently there are such reactions also in reverse: Researchers of the University of Edinburgh reported that every two hundredth cat suffers from allergic asthma, caused among other things by human dander.
University of Edinburgh. “Asthmatic Cats May Be Allergic To Humans, Say Vets.” ScienceDaily.
(Retrieved July 1, 2022).