I'm looking for a short story about a teenage girl who is with some kind of scientific expedition on a planet inhabited by humanoids, where there is no odor at all except in the vicinity of someone who is about to die. She ends up stranded without her comrades and the inhabitants do not believe that she is from off planet and put her in something like a psych hospital. At the end of the story she says something like, "I think I just lost my ride home." (Yes, I tried googling variations on that.) It was in an anthology of some kind or in a magazine, many decades ago.
Also in the same anthology or magazine, I think, was another short story about a humanoid alien stranded on Earth who is similarly not believed and considered insane, and loses his sight as a result of an eye exam, and therefore can't use the equipment that would gotten him home.