The smells are back... The weird thing is, some of the decor is the same stuff that's in the BP's enclosure (the only one that has a natural earthy smell), but I do think the stuff in the corn's is the "weakest" in overall smell, so I want to think it lessens over time. Also the VBB's QT setup is almost entirely plastic (plastic tub, the hides are dollar store paint trays I melted entry holes into, the fake plants and the water dish is a tupperware container due to running out of small water bowls) so the smell could be from anything, and the enclosure for her to move into smells the overall weirdest due to a combination of freshly mixed (and therefore highly humid) substrate, brand new fake planks, multiple types of wood and an older RHP that's seeing its first use in roughly a decade.
Last thing I can think of to is to let the plants soak in a tub overnight. It's incredibly frustrating because I've seen tons of other people use dollar/craft store stuff for their enclosures and never heard of any fume issues like what I'm dealing with, and I've spent literal hundreds of dollars on all of it...