Wherever you go in the world, the smell of McDonalds and Subway is instantly recognisable; and detectable from miles away. So how is it produced, why is it so powerful and how does it travel so far?

Why does fast food smell like ...fast food?

This program is no longer in production. Making sense of Australia’s place in the world, Between the Lines puts contemporary international issues and events into a broader historical context, seeking out original perspectives and challenging accepted wisdom.

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This program is no longer in production. Making sense of Australia’s place in the world, Between the Lines puts contemporary international issues and events into a broader historical context, seeking out original perspectives and challenging accepted wisdom.

This program is no longer in production.&nbsp;Making sense of Australia’s place in the world, Between the Lines puts contemporary international issues and events into a broader historical context, seeking out original perspectives and challenging accepted wisdom.

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Why does fast food smell like ...fast food?

Why does fast food smell like ...fast food?