
Your sense of smell is quite correct! There is a whole bunch of exposed wire-bonds under that cover.
The cover held in place by 2 plastic pins that penetrate through the PCB. You can push them through from the other side........make sure the cover doesn’t swing around as the first pin is released !!
The tricky part is putting the cover back on. In hind-sight, I would shave the pins down a fraction so they’re not as tight a fit, and I’d also glue some fairly rigid fishing line to the ends of each pin (which can be fed through each hole in the PCB), so that the cover can be located accurately, first time. Then cut the fishing line off from the other side.
Good luck !
Rgds,
Andrew.