Space is a vacuum. With no air you may expect it to not have any odor either. Not so. Space smells like steak according to some NASA astronauts. It also has an order of hot metal. The scents are on their suits when they get back from space walks. NASA is now trying to replicate the smells to make training exercises more realistic.
"OUTER space smells of fried steak, scientists revealed yesterday. The universe also has an aroma of hot metal and motorbike welding, Nasa experts said.
Astronauts reported the bizarre scents on their suits when they returned from space walks."