Artemis 2 Crew Reports Burning Smell From Orion's Space Toilet

Why It Matters

A detectable odor in Orion’s waste‑management system tests NASA’s ability to quickly diagnose and mitigate life‑support anomalies, reinforcing safety protocols essential for upcoming lunar and deep‑space missions.

Key Takeaways

• Orion crew detected a burning odor from the space toilet.
• Ground team suspects orange gasket or heater component as source.
• Odor similar to pre‑flight heater smell, but more acute today.
• No major safety concerns; odor dissipated after toilet use.
• Mission now halfway to Moon, tracking via Deep Space Network.

Summary

The Artemis 2 crew reported a distinct burning smell emanating from Orion’s hygiene bay, specifically the space‑toilet system, while the spacecraft is roughly halfway to the Moon, about 134,000 miles from Earth. Mission control logged the observation during a routine status check and referenced pre‑flight odor reports.

Ground engineers identified two probable sources: the orange gasket material around the hygiene‑bay door and a heater element that may have warmed after a period of inactivity. The crew described the scent as reminiscent of a heater that has been idle, noting it was stronger than the lighter odor noted on flight day 1. NASA’s team concluded the odor was not a critical fault and that it dissipated after the toilet was used.

“...it smelled like a heater that’s been sitting for a while,” astronaut Jeremy said, echoing earlier comments that a similar smell occurred when the toilet was first activated. Controllers confirmed the gasket was unlikely the culprit and closed the discussion, emphasizing no immediate safety risk.

The incident underscores the importance of rigorous life‑support validation for deep‑space missions. While the smell did not jeopardize the flight, it highlights how even minor system quirks receive close scrutiny, informing design refinements for future Artemis voyages and ensuring crew confidence in Orion’s environmental controls.

Original Description

Artemis 2 astronauts Christina Koch and Jeremy Hansen talk to mission control about a burning odor coming from the hygiene bay that houses the Orion spacecraft toilet. https://www.youtube.com/watch?v=4mA0OdK4R5A&list=PLCE-SVF9BSTeAVgK-bWkWcWMNdWGjDW_9&index=1

Credit: NASA | edited by Space.com's Steve Spaleta