Have never had a problem on a bus, but bought some ‘Stinking Bishop’ cheese in London and noticed on the train back to Sussex, that the very distinctive odour was seeping from the shopping bag, despite the shop double wrapping it. I apologised to my near neighbours explaining the problem and everyone was very nice. However, some schoolgirls got on at Tonbridge, walked into our carriage, took one sniff and both said ‘What on earth is that smell’ ooh that’s disgusting’ and went and sat elsewhere. I was so embarrassed, I swore I would never buy it again!