There are few things better than the smell of freshly baked bread from the oven; this is because molecules in the bread disperse in the heat to reach your nose. In a similar way, the ExoMars rover Rosalind Franklin will “bake” and “sniff” Martian samples in miniature ovens, imaged above, as part of its investigation of the extra-terrestrial world.
Source:
https://phys.org/news/2019-05-mars-molecule-analyser-exomars-rover.html