>Enter white door.
The portholes on those talking (or were they?) doors are too greasy to see through, and you're still not keen to find out what "transfusionation" entails. You're about evenly torn between your options, and they're all equally ominous. The possibility of finding another human being seems like a reasonable enough tiebreaker...
You can faintly see a dull, dirty glow in the distance. The hall is icy cold, and smells incredibly moldy.