I know this isn't what you have in mind, but the British dropped opium-laced cigarettes on the Turkish lines at Gaza: https://books.google.com/books?id=XvT8CWv2DakC&pg=PA23&dq=meinertzhagen+opium&hl=en&sa=X&ved=0ahUKEwiu45mQ7tPVAhVFQSYKHeGBBEYQ6AEILjAB#v=onepage&q=meinertzhagen%20opium&f=false

The sole source of the incident, a British intelligence officer named Richard Meinertzhagen, described it as effective though most accounts of the battles of Gaza that I've come across are deeply skeptical of that.