Bathroom fumes on the trains seem to be affecting the ventilation systems- I guess that happens when cars are in operation for 30+ years.  After the 111 minute ride from GCT to New Haven, I vomited from the terrible smell.  Although less strong in some cars, the bathroom odor sometimes makes me ill after a long ride.  On a separate but related matter, I am curious as to how often the trains are cleaned, as I have only ever seen them filthy and with accumulated garbage.