I went to bed last night around 22:15, our first night at 11982', essentially 12000'! I woke up very confused today at 00:15. I heard someone in the hallway moving, which wasn't unusual as the shared toilets were down the hall. The retching sounds, however, followed by the splash was unusual. I lay there for a bit before realizing that if I were the one puking in the hall, I would want help. Unsure if anyone else had heard, but I had, and helping was the right thing to do, I unzipped my bag.
"It's okay, it's okay. Go back to sleep."
When in distress, sometimes people are embarrassed. When at altitude, people may not be thinking clearly. Add in the time of the night, and I wanted to confirm.
"I'd like to help. Will you let me help you?"
While speaking, the location of the spill became more obvious, and it was right in the dorm doorway. I would realize only while helping clean up the vomit that the mess missed my bag by about 12". Close!