Robot explorers have found Mars to be a world of sulfur, acids, magnesium, iron and chlorine compounds, all of which are sunbaked and wrapped in a carbon-dioxide-rich atmosphere.

But what would this complex and exotic brew smell like?

It turns out that everyone—not just Mars explorers—might be able to find out, because there may be ways to recreate whiffs of the Red Planet here on Earth. [The 7 Biggest Mysteries of Mars]

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