I read about someone who had an allergy to the water molecule. she couldn't drink a mouthful of water or her throat would close up. It wasn't to do with chemicals in the water but her immune system seeing water molecules as foreign. she had to survive by drinking mixtures (ie milk) to mask the water molecules from her immune system.

I don't find allergies hot but for some reason I feel like this has kind of become a fetish and I'm not exactly complaining but I want to know why. Getting only hives on your skin is meh I'm more specifically interested in swelling up from drinking a tiny bit of water and I'd switch my nut allergy for a H2O allergy if I could.

Oddly when I discussed this with a friend he said he found it kind of hot too.