What’s the smell of clouds? , which said in an advertisement for compresses on TV. But the important thing, if we want to colonize Mars, is to find out what Mars smells like and prepare ourselves psychologically for that smell , for example doing spectroscopy of the atmosphere of Mars to capture the "aroma" and be recreated in a laboratory.
Burnt gunpowder and wet ash like a campfire that had been put out was the first description of the moon’s smell as they brought some dust up to the landing module and took off their helmets. Since the Martian atmosphere is different from the terrestrial one, we have to hope that the ambient smell is also different .
Its surface contains compounds of sulfur, acids, magnesium, iron and chlorine. This new combination of fragrances, together with the sensation of remoteness and isolation of the Earth, may have a not inconsiderable psychological component in the first settlers. Thus, they have warned that these situations of isolation can lead to depression, insomnia, anxiety, fatigue, boredom and emotional instability.
Therefore, they indicate that it would be necessary to recreate the smell of Mars on Earth and begin to familiarize astronauts with its exposure as training prior to colonization .