I do have a Nevermore Activated Carbon Filter kit but I have yet to print out the parts and install it. I'm hopeful that the filter will mount just behind this Kinematic Center Brace, that I believe @HeloMechGuy may have been referencing.
"the filter" is the name of a nevermore like filter that's supposed to have some improvements: https://www.printables.com/model/334276-the-filter-for-voron-24