I am so sorry to hear this, poor little thing. I didn't even realize dogs could be allergic to humans. I know I would have a hard time if Joey couldn't sleep with me. Wish I had some advise for you, I agree with Ladyj if you knew what was causing the allergy i.e. skin or hair, you might be able to work around it better. Here's a link with some good information:
Your dog may be allergic to you | www.azstarnet.com ®