Allergy to cats is usually caused by the dander in their skin (like human dandruff), not so much the hair. Having said that, the Devon Rex is, apparently less likely to cause an allergic reaction, as they have very close, curly fur. You could also try getting an ioniser - it worked for us when K Jnr was small & had paediatric asthma. We had a cat & the Dr thought he might be allergic to her, but I'm a dreadful mum & refused to get rid of my cat, so I bought an ioniser & put it in his room, and another one in the living room. Worked a treat & K Jnr grew out of the asthma. He's now a strapping 18yr-old & we've got 5 cats!