Re: Weird Thing in "The Naked Time"
I think that had the actors worn simple jackets in the "freezing cold" room, the audience would notice that there is no visible exhaled breath coming from the actors. (I doubt the producers would have worked to drop the temperature of the soundstage below freezing in order to make it look more realistic.)
Or build a set and film inside an actual icehouse, like Orson Welles did for the snow sequences in The Magnificent Ambersons
“All the universe or nothingness. Which shall it be, Passworthy? Which shall it be?”