I got some activated charcoal pills to try this year, along with some powder to pour into my boots, and mix with my clothes in trash bags.
I started researching a bit to see if it might be possible to buy activated charcoal powder and create a scentlok type of effect without having to worry about reactivation or any of that.
Turns out, the stuff is used to clear indigestion and claims all kinds of health benefits. Moreover, you can put it in pet's food to get rid of bad odors. Seems like maybe it will work, but won't know much until I start experimenting with it.
It isn't real expensive. I reckon there's only a few dollars worth of activcated carbon in those scent lock suits - you can buy pounds of the stuff for like $20.