The Smell of Space: Mystery & Explanation

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SUMMARY

The distinct smell of space, as reported by astronauts, is likely due to chemical residues from space suits and the materials of the International Space Station. Astronauts have noted that the smell may include plasticizers and cleaning agents that outgas from their suits. Additionally, the smell has been compared to ozone, similar to the scent produced by arc welding. This phenomenon highlights the unique environmental conditions of space, where the absence of atmospheric odors can lead to a heightened awareness of any available scents.

PREREQUISITES
  • Understanding of chemical outgassing processes
  • Familiarity with space suit materials and their properties
  • Knowledge of atmospheric chemistry, particularly ozone
  • Basic concepts of ionization and its effects on materials
NEXT STEPS
  • Research the chemical composition of space suit materials
  • Learn about the effects of outgassing in vacuum environments
  • Investigate the properties and formation of ozone in space
  • Explore the psychological effects of sensory deprivation in space missions
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Astronauts, aerospace engineers, chemists, and anyone interested in the sensory experiences of space travel and the materials used in space exploration.

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This is just weird, and probably has a good explanation.. But how can a space suit or space have a distinct smell? Could the smell be coming from particles off their space suits? If so, how/why?

http://spaceflight.nasa.gov/station/crew/exp6/spacechronicles4.html
 
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What were they working on outside? It could be whatever residue might be on the parts of the space station they were working on that rubbed off on their suits.
 
Probbaly plasticisors and cleaning residue outgassing from the suits.

The skylab astronauts mentioned one of the disorientating things was missing the smell of anything - the air cleaning system so efficently removed any chemical residue from the air.
They said they opened the lemon cleaning wipes that came with the food just to have something to smell.
 
He said that it smelled similar to using an arc welder, so I would guess that it is probably the smell of ions and such deposited on the suit. Maybe some of that is ozone, but I would guess that a lot of it is lighter particles.
 

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