http://observer.guardian.co.uk/uk_news/story/0,6903,656205,00.htmlIn 1998, the Pentagon commissioned scientist Pam Dalton, from the Monell Chemical Senses Centre in Philadelphia, to test disgusting odours.
One question she was trying to answer was whether there were different cultural reactions to bad smells. She tested the odours on five ethnic groups.
She found that two smells transcended cultural barriers: one is called US Government Standard Bathroom Malodour, a horrendously concentrated stink of human faeces.
Dalton said: 'It's very pungent... more precisely, it smells like shit, but much, much stronger. It fills your head. It gets to you in ways that are unimaginable. It's not something you are likely to come across in the real world.'
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