Does black licorice help your vocal chords in any way?

I think I may have laryngitis and I have been dealing with it for about 2 weeks. IDK how long it will last and I have a solo ensemble contest on March 5th. I've been told that black licorice helps warm your vocal chords (not sure what that means). But I can't find any information regarding this online. So does black licorice really help?