I became allergic to cats in my early 20's, but it faded. Plus, I loves me some animals, so it never kept me away from them anyway. :lol:
I've heard that your system apparently changes slightly about every 7 years, so you can suddenly develop allergies that you've never had before, but I tend to think you may be on to something when you say you "inherited" them from your parents... I started to notice a lot of odd little new afflictions and whatnot when I got into my 30's, and for the most part I've gotten them from my folks, it seems. Hypoactive thyroid (mom), droopy eyelid that I had to get fixed (dad), eye sensitivities to make-up, face creams etc. (mom), slight winter asthma type condition (mom)... and I can only imagine the list will continue to lengthen! Damn DNA! :lol: