NASA: Space Station crew never in danger during smoke incident

The crew of the International Space Station was not in danger while a small amount of smoke came from a vent Tuesday in a service module, NASA said in a news release.
The six-person crew called in the smoke report Tuesday about 2:40 p.m. ET. Russian flight controllers and the crew pinpointed the most likely source of the smoke as a heater and the crew turned it off. Crew members set up a fan and used a filter to air out the area.
Steve Swanson, commander of Expedition 40, said the smoke quickly subsided.
The Russian-made Zvezda service module is 43 feet long and 13½ feet in diameter. It is the site of living quarters and the galley, and the issue arose in a water reclamation unit.