It’s too early to say what’s cause and what’s effect, but Yahoo! News – Hay Fever Risk Higher When Partner Has It reports on an interesting finding:
Couples who live together are also likely to sneeze together, according to new research suggesting that hay fever may be ‘transmissible.’The study of nearly 4,300 German adults found that those whose partners had hay fever were at greater risk of developing such allergies themselves. And the longer couples lived together, the higher the hay fever risk climbed.