Scott Beale of Laughing Squid spotted these handsome goggles designed to protect your eyes when cutting onions. One reviewer on Amazon reports that they're useful for, er, other purposes too:
I bought these to watch TV. My ceiling fan dries my eyes out really badly and with summer coming, I was looking for a solution. I found these and thought that if they keep onion gas out, they should keep the fan air away. They work well for this and I could see how they would be great for the intended purpose.
Link to Laughing Squid, Link to buy on Amazon