Few people have experienced traveling into space. Even fewer have experienced the smell of space. Now this sounds strange, that a vacuum could have a smell and that a human being could live to smell that smell.
It seems about as improbable as listening to sounds in space, yet space has a definite smell. Being creatures of an atmosphere, we can only smell space indirectly.
Sort of like the way a pit viper smells by waving its tongue in the air and thenpressing it to the roof of its mouth where sensors process the molecules that have been adsorbed onto the waggling appendage.
It is hard to describe this smell; it is definitely not the olfactory equivalent to describing the palette sensations of some new food as "tastes like chicken." The best description is metallic; a rather pleasant sweet metallic sensation.