That would be my best guess,,or something similar,,
It acted too fast to be anything else,,IMHO.
More: Mycotoxins: Trichothecene mycotoxins are a family of poisonous compounds made from a mold that grows on wheat, millet and barley. Mycotoxins can be absorbed by the skin, inhaled or ingested. These toxins attack the cells of bone marrow, skin, and the G-I tract. They also block blood clotting. It takes only about 35 milligrams in aerosol form to kill an average man, but mycotoxins are considered only moderately lethal. Iraq provided no documentation on its work, so inspectors never determined how much may have been produced.