For the past couple of months each day that I don't wash my hair, I smell this sour smell. And I know it has to be my hair. I don't understand why it's doing this all of a sudden. I used to wash my hair every other day and it was just fine, still smelled great. So now I've been washing it everyday which I know isn't good because it's drying it out. Has anyone ever had this problem? I don't like washing my hair every single day, what should I do? Thanks