Are stations harmfull

The short version: I can't tell you whether "stations" are harmful, because I don't know what you mean by "stations."

No studies were retrieved for this question, so there is nothing here to ground an answer in. "Stations" could mean a lot of things: train or subway stations, charging stations, weather stations, work stations, radio stations, or something else entirely.

If you tell me which kind you mean, and what harm you're worried about (air quality, radiation, noise, injury, infection risk), I can point you at the specific evidence that would answer it.

My call: I can't give one until I know what "stations" refers to. Confidence: not clear.