It stinks
Filters continually clean the air inside the ISS, but crew members have described the interior as smelling like ozone, gunpowder, antiseptic, garbage, body odor, a hospital, burnt metal toast, and even a “barbecue that’s gone wrong,” the latter description coming from U.K. astronaut Tim Peake. The station’s waste management system also contributes to the unpleasant odors wafting through the lab. But as ESA astronaut Samantha Cristoforetti claims, you kind of get used to it after a while.
