The issue of people attributing every smell and symptom to the train emissions is something I dealt with many times in my 30+ years working in air pollution control. Often the “obvious” source of an odor isn’t the actual source! Once I was yelled at by our deputy director (an accountant, not a scientist or engineer) for noting that wind direction showed an odor was likely coming from a tucked-away sewage plant rather than a highly-visible garbage dump. (I was right.)
The issue of people attributing every smell and symptom to the train emissions is something I dealt with many times in my 30+ years working in air pollution control. Often the “obvious” source of an odor isn’t the actual source! Once I was yelled at by our deputy director (an accountant, not a scientist or engineer) for noting that wind direction showed an odor was likely coming from a tucked-away sewage plant rather than a highly-visible garbage dump. (I was right.)