I'm sorry, but I just can't believe your fruits have no fragrance!
Perhaps you have simply become so used to it that you no longer notice.
To increase the strength of the smell, scratch the peel a bit and then put the fruit in a closed warm drawer or cupboard or small room. Come back a few hours later and see if the fragrance wafts out.
If you still can't smell anything, then I think you've got a faulty nose - try someone else's!