That is different. If it's stinking the train out then passengers have every right to complain, although I'd argue that a slight waft of fag smoke under the cab door is no worse than driving a late night train with the stench of Burger King coming in to the cab from the passengers behind.
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Lets also not forget the passengers late at night who think its fine to actually smoke in the carriage itself and make it waft everywhere and stink out the train - its not just the fast food. Though their faces are a picture if I emerge from the back cab to find out whats going on
