What is a smell? Or rather, how the human sense of smell works – in the process of breathing through the nose, together with the air, the molecules of substances contained in it enter the human body, to which olfactory receptors react.
In space (or rather in outer space) there are no conditions for the transfer of these molecules, and a gas medium of sufficient density that will allow a person to draw these molecules inside himself.
Theoretically, if it is directed to bombard a person’s nose with a stream of molecules, then probably some kind of smell can be felt, but a person cannot live at zero pressure. And the speed of flight of atoms and molecules in outer space is such that it will simply destroy the olfactory receptor before it has time to react.
So space doesn’t smell.