As a child I read a SciFi short story where I think two astronauts (emergency?) landet on a planet and as soon as they fall asleep they are being controlled by the local (immaterial) species, so the protagonist fights to not falls asleep and the story ends with him finally surrendering, if I remember correctly. The airlock also could have played a role, but I'm not sure.

These are very vague memories, must have been in a short story collection form the local library and it was probably late 80s or early 90s when I read it. 

Any help greatly appreciated!