Samantha Cristoforetti (yes, #astrosamantha, the astronaut) spoke twice about smells during her mission on the ISS, and I believe no other astronaut before had ever mentioned anything about smell and outer space.
The first time was more a joke than a real thing (“Outer space smells of something burned"), while the second was more serious.
She had just landed few minutes before, and one of the first things she said was:"I perceive a soft, pleasant smell”.
The second statement is the one that strikes me and makes me reflect . What I would give to have her describe that smell!