

If you’re on Android, by any chance, have you gone through all the battery optimization, background process killing, and startup settings? Some OEM’s versions of Android are real bad in that way. Giving the app the right settings and permissions may decrease the number of delayed notifications like that.
I believe you should fart excessively around it and indeed encourage fellow commuters to join in, as it will provide terrible air quality results here. Which will in turn improve ventilation measures in this area, which would not have happened otherwise. Checkmate! The act of observing alters the results!