The Pentagon examined the possibility of developing an aphrodisiac bomb that would cause enemy troops to find one another sexually irresistible, newly declassified documents reveal.

It also considered development of a "Who? Me?" bomb that would produce odours that suggested that other soldiers were passing wind or had serious halitosis to disrupt enemy morale.

The £5 million six-year research project suggested the use of "chemicals that affect human behaviour so that discipline and morale in enemy units is adversely affected".

It said: "One distasteful but completely non-lethal example would be strong aphrodisiacs, especially if the chemical also caused homosexual behaviour."

It is not known if, or when, the programme was abandoned.

The Pentagon also considered chemicals that would make the enemy troops sexually attractive to "annoying or injurious animals" such as stinging and biting bugs or rodents.

The 1994 plans, from the US air force Wright Laboratory in Dayton, Ohio, were obtained under the Freedom of Information Act by the Sunshine Project, which exposes chemical and biological weapons research.

Since 1945 there had been extensive research into the effectiveness of the "Who? Me?" bomb, the declassified documents said.

But it was found "that people in many areas of the world do not find faecal odour offensive since they smell it on a regular basis".

© Copyright of Telegraph Group Limited 2005.

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I read about this before. They were also working on something to cause bad halitosis so they could find enemy combatants entrenched in a civilian populations.