Remember when I said my harmonica sounds bad? This is what I meant.
(I made a new thread because I didn’t want to bump an old topic).
How does a harmonica that’s only a month old have this problem?
Stop eating crackers before playing… 
It may just be that reed is crap. It happens. I would look at getting a replacement form where you bought it if it’s only a month old. It may also be under warranty.