I believe the saying is: "Make love, not war."
In 1994, researchers working for the US Air Force actually submitted a three-page proposal to the Pentagon outlining their plan to develop a non-lethal bomb that would, in theory, make the enemy combatants become so irresistible to each other that they become distracted from their military duty.
The bomb itself would contain very strong female sex pheromones that, put simply, would make the enemy sexually attracted to each other.
The plans were part of a project that spanned six years, costing $7.5m. Ultimately, they were never pursued and the bomb was never actually produced.
It won the 2007 Ig Nobel Peace Prize for "instigating research & development on a chemical weapon - the so-called 'gay bomb' / 'poof bomb' -that will make enemy soldiers become sexually irresistible to each other." Unfortunately, Air Force personnel did not attend the ceremony to accept the award.
The proposal and others like it were obtained by a Freedom of Information request by the Sunshine Project. Another weapon that was exposed by the request, but never saw the light of day, was one that intended to make soldiers more obvious by their bad breath.
Another device, appropriately named "Who? Me?", had been contemplated since 1945 which would have simulated potent flatulence among the enemy ranks.