Some of the ideas pitched to the US military:
The plan for a so-called "love bomb" envisaged an aphrodisiac chemical that would provoke widespread homosexual behaviour among troops, causing what the military called a "distasteful but completely non-lethal" blow to morale.
Scientists also reportedly considered a "sting me/attack me" chemical weapon to attract swarms of enraged wasps or angry rats towards enemy troops.
A substance to make the skin unbearably sensitive to sunlight was also pondered.
Another idea was to develop a chemical causing "severe and lasting halitosis", so that enemy forces would be obvious even when they tried to blend in with civilians.
The report adds that these ideas were not pursued.
Thanks to Sharath Rao for the pointer.