Burger King and American Lung Association have teamed up for a Valentine coupon fund-raiser that that helps fund the lung association.The $1 coupon booklets, can be purchased at local Burger Kings through Feb. 14. The books have eight coupons for things such as a free Whopper or drink, totaling $18 in savings.All of the proceeds go to the American Lung Association of Kentucky, where the money helps fund asthma camps, support groups and research.