The Decontamination Meeting Room
For those not familiar with the show or series, the decontamination chamber was an area where crew members would go after away missions. The chamber was designed to remove harmful pathogens, and involved the crew members rubbing medicinal gel over one another’s bodies, while bathing under a blue colored UV light.
That’s the scientific explanation for the chamber. For those of us who aren’t 100% Trekkies and blinded by fandom, we see it for what it is: a bit of visual erotica that aims to nudge this Sci-Fi show a few steps towards softcore pornography.