I know I had a bar of soap that I had purchased and I thought it lost it's scent, but after I used it a few times, the scent was strong again, I think just the outside lost the scent. I don't know if that's the case with your soap, but you might try to cut into it to see if the center still has scent.
If there really isn't any scent and If the lack of scent really bothers you you could rebatch it and add scent once it's melted, though if they've been curing for a while you'll want to add some water with the shreds.