K.H.
Is the smell on the pockets themselves or on the inserts? Have you tried boiling? What about oxy clean? What detergent are you using?
Have you seen this link? http://renegadebaby.net/faqs.php#Q19
Help! My diapers stink! (smell like ammonia, icky..etc)
Diapers that smell can be caused by two different things. One is detergent build up and the other is ammonia bacteria. Using proper washing techniques should stop the smell. Please look here to see how to properly wash your diapers. In the meantime, If it's detergent buildup you'll need to wash your diapers in hot with no detergent until there are no more bubbles. This could be several washes. If it's ammonia bacteria you'll need to either boil your diapers and then let them cool so you don't stretch the elastic or add a capful of bleach to a hot wash with no detergent then wash like normal.