This is a scratch and sniff print that resembles the smell of the moon. So what does it smell like? According to Apollo 16 astronaut Charlie Duke, like gunpowder.
In 1972 Duke said, about the moon's smell:
It is really a strong smell. It has that taste—to me, gunpowder—and the smell of gunpowder, too.
The scent was designed by Steven Pearce at Omega Ingredients, UK and the print was commissioned by Stedelijk Museum in Amsterdam. I need this in my life. [We Colonised the Moon via BoingBoing]