The Smell of the Cinema: Human Chemical Signals?

The air in a cinema contains a chemical cocktail emitted by the audience – and the emotional tone of the movie influences the molecular composition of the cloud.

That’s according to a striking set of results from researchers Johnathan Williams and colleagues who took air samples from two 230-seater screens of a cinema in Germany over a period of two weeks.

Here’s an example of the chemical trace associated with shows of the movie “The Hunger Games 2: Catching Fire”, featuring three

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