I remember vividly when I was a teen going to visit my relatives (who had 4 cats in their apartment) and having these alarming sensations: my lower front teeth/lower jaw felt really really weird, like it was all cold and achy, and my throat was really really tight and my chest was constricting. I LOVE cats though (and so does my little boy) and was playing with them anyway, and one of them happened to lightly scratch my hand while playing "catch" with the yarn or string I had. Well, that scratch swelled up pink, white and red and after that, there was no question in my mom's mind (and convinced a reluctant-to-believe me as well) that it was the cats, not anything else that I was allergic to.
My family had a cat when I was very young (ironically my only memory of it is letting it out - for the last time ever!) but after that visit to my relatives' little apt with 4 cats, I guess we were overwhelmed. My dad had a severe reaction too (constricted windpipe/breathing/congestion) and driving home was agony (they were some distance away, and we encountered night-time construction closures along the way). I think it took him a few days (and a sick day off work which was rare) for him to recover. Ever since then, it only takes my dad and I a max of half a hour to know whether there is a cat in the house (even a single cat hiding out of sight in a large clean house). It starts by itchy eyes, runny nose, and constricting windpipe. If I'm not out of there soon then my teeth/jaw hurts and I have a hard time breathing and it DOES NOT FEEL GOOD! I wouldnt wish this on ANYONE.
I totally emphatize with you wanting kittens for your family but SEVERAL?!?!
What have you thought about allergy testing? If he/ no one in your family is NOT allergic to cats, then go for it. But if anyone shows a reaction, then please dont. They will encounter cats plenty in their lives but to LIVE with one- or several- can be agony (compounded with guilt because they love their family pet)
I knew since that experience I was allergic to cats. Wasn't until I tested a few years ago to see what else (enviromental) allergens bothered me and come to find out, I am allergic to dogs too! (dogs rated a "2" while cats "4" which was the max on the scale) We were considering getting a chocolate lab puppy from a friend at the time but my husband said nope after that and that we would *never* have an indoor pet. My poor son is 6 yr old now and *loves* animals, talks about and begs for a pet nearly everyday for the past year or two. My husband (a veterinarian himself) feels strongly about having pets in the house when someone's allergic. :-/ (so.... maybe a bunny? I dont they tested for bunnies on my allergy tests grin)