I have this problem all the time. I am allergic to dogs which is a huge pain as so many people have pets and therefore I can't visit their homes. People will say to me - oh don't worry - my dog is hypoallergenic!! Apparently my histamines and asthma don't care!! I am just as allergic to hypoallergenic dogs as any other dog.

I purchased a poodle years ago because I was told it was hypoallergenic.  However, after a couple of weeks, I developed allergies so bad that my eyes would swell up every day!  I finally had to return the dog to the breeder, which caused a lot of turmoil in our family.  If a hypoallergenic breed is ever discovered, I would consider a dog again, but as for now, my health is more important!