In 1973, when I was an AF captain assigned to Hill AFB, UT, the Ogden Air Logistic Center Commander, my boss and I were given a guided tour of Tooele Army Depot. At that time Tooele held much of the US stockpile of nerve gas. The person giving us the tour told us that Black Flag insect spray had the same ingredients as nerve gas, only in a very greatly dilute form. So, if you spray enough of the Black Flag insect spray on the perp you may put out his lights permanently, not that I would feel too bad about that.
Actually, not any more.
The most potent forms of nerve gas(es) (eg, VX, GA, GB, GC) are based on the chemical family known as “organophosphates,” of which common farm pesticides like malathion and dimethoate are also members.
Since the mid-90’s, the EPA has so restricted OP’s that most unrestricted user pesticides have gone to permethrin-based chemicals, which is a different chemistry. There’s no nerve gas of which I’m aware that is based on permethrin chemistry.
The unrestricted pesticides you can buy over-the-counter without an applicator’s permit are so dilute, you’d have to dunk a perp in a 55 gallon drum of the concentrate to make them even a little sick.
Now, there are some restricted pesticides that can kill your ass dead, but you’re not going to find any of them at Home Depot...