How do I get the stale cracker smell out of my Tupperware container?

My pantry was left full and unused for several years due to full time job and eating out all the time. Now that we have started a family, I have been cleaning out the pantry and throwing old things out and utilizing it for what it is meant for. That feels good. Help me get the smell out of my Tupperware storage units so I can use them again! Anyone?