How about this thought.. If you sweat in your boots and then store them in a closed rubber container the sweat smell is coming out of the boot and is all over the outside of the boots now too.
Good point. I always leave my boots outside after the hunt to " air them out" . After a certain period of time I think bring them back in and store them in a closed container with some natural-scent items such as leaves, pine cones, etc...