explain briefly the effect that jerome ripe cheese had on other train passenger

Jerome packs some rather pungent cheese to take to a friend. THis smell basically clears the train out with a "two hundred horse-power scent."

when Jerome was travelling in the train he had some ripe cheese it was too stinky that's why peoples were covering their mouths with the handkerchief but it was very fouling smell so peoples were started to leave that place. then Jerome took an oath that he would not bring ripe cheese in the train.