Nice catch, it wouldn't surprise me either. It's looks humid as shit in there. It actually looks right too, looks like the weird smudges that happens when you have clammy hands.
Yeah, hot and humid... i bet most animals are extinct but Mosquitos thriving... damn mosquitos...
It would be funny to have V lose 1HP and clap a mosquito on their neck :P
by the way, the excerpts start at 32:25 in the video deepdive+qa (for better clarity).