Four cats, four kitty beds in sewing room, plus it's not my chair - it's theirs! I have no choice about letting them in. My Rudy cat (see avatar) is part Siamese and SCREAMS if I don't let him in. After all, I am his person and he must be with me at all times. As for the others, my Squeaky will beat on the door until she pops the door handle. The remaining two, Baby Peeps and Missy, let the other two do the work (smart kitties!).
Allergies? Isn't that why they make allergy shots? Been on them for years. :-)