Bhai I travel between Lhr and Rwp/Isl on weekly basis mostly by motorway only 3 hours on each side. Last year during heavy fog times couldn't travel by car, flight option was even worse so opted to travel by by train both way three times, parlour car of course.
My experiences some of them, this one time 15 minutes before train leaves, train is full and everyone is seated no problem, the moment the damn train moves almost half the people pull their lunch boxes out and every kind of nasty smell tests the strength of your olfactory senses and as yet I fail to understand the reason if people had to eat why didn't they do it while they were outside, what has motion got to do with eating. Same like travelling from a Pakistan bound flight from Manchester or Birmingham.
Its the same every time.
Btw there are no fire extinguishers in any compartment of PR.
Friends tell me the train was filled with tableeghi jamaat people, while scanners and police would have tried to do their duties but quantity or mob has its way of getting things done even against rule/law.
Tableeghi bhais travel with an assortment of things required during their journey there were small gas stoves, while the incidence is sad, loss of life is equally regretful, as much as people would like to blame PR and sheikh rasheed and IK, perhaps part of that blame should go to the people travelling/using such stoves on a train and coming up with ridiculous answers as mentioned above by others.