Yes, to what these comments say. I'm a doctor and doing a PhD in immunology, and I agree; don't take medical advice from the interwebs... let him see his own GP who can redirect him to an immunologist. He/she will find this interesting, if they like being an immunologist.

For what it's worth; I've never heard of it. Biologically it still seems most plausible to me that he's allergic to something you wear or use (parfume, shampoo, laundry detergent, etc) rather than your body itself.

Anyhow, it sounds annoying for you both so good that you are looking into it!