Some cats make me allergic, others no. Its weird and I only found out when one of our cats passed. This white cat, tonkinese short hair mix, made me seriously allergic to the point where I would occasionally need an asthma inhaler. I just thought I was coming down with asthma and allergies and could never point out the cause. When that cat died, my allergies dissipated within the course of 2 weeks and as we cleaned the house and traces of his presence slowly disappeared, my allergies also went away. I havent used my inhaler in months.
Whats interesting is that he was the only cat I was ever allergic too. We even have cats now and I can snuggle them, hang out with them in my lap on the couch, they sleep next to our heads on the pillows and no sneezing, eyes watering, chest wheezing etc...