I remember that Libya had a humungous amount of fly spray ordered. It went through the "usual channels" who said, hang on, that's enough to make several viable chemical weapons.In days gone by ICI used to keep regular contact with Porton Down, because a lot of pesticides were closely related to nerve agents and some stuff was unsuitable for the civvy market but would have been of interest to Porton Down. For that reason I never used fly spray, it does to flies what VX and GB do to us, and if you read the small print it is a bit disconcerting.
It was cancelled
The same thing with Biros. The ink is a pre-curser in a lot of chemical weapons.