Astronauts baffled by 'unexpected odor' leaking from Russian spacecraft docked at ISS

The International Space Station at the center of the image with Earth in the background.

Astronauts aboard the International Space Station (ISS) have been besieged by a weird, possibly toxic smell after the arrival of a Russian cargo spacecraft.

The strange odor — reportedly smelling of spray paint — leapt out at Russian cosmonauts after the docking of the Progress spacecraft with the Russian Poisk module of the ISS on Saturday (Nov. 23), forcing them to close the hatch and put on protective equipment.