Airborne won't cure a cold. It's supposed to help your immune system so you don't get a cold. The ONLY thing that has ever been proven to shorten the duration of a cold is zinc. Airborne has some zinc but not enough to help a cold that you already have.
Take "coldeeze" or something like it. You can usually find it in the grocery store right by the airborne.
http://www.coldeeze.com/