Fantasies about eating or being eaten are a known niche. They are fantasy scripts, not something a dungeon is set up to do.
What the research is about
Sex and Psychology covers how common those fantasies are in research.
Source: How Common are Fantasies About Eating (or Being Eaten by) Someone Else?, Sex and Psychology, September 25,
- Figures, samples, and methods are on that page.
How this shows up in public play
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Keep this in talk, writing, or roleplay that everyone understands as pretend.
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Do not involve anyone who has not agreed to the theme.
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Public play spaces are for agreed physical play, not surprise horror scenes.
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If the interest is fear, look at fear-play classes, not a stunt.