County officials are investigating whether a Rio Bravo-Greeley Union School District bus was accidentally sprayed with a toxic insecticide Jan. 22 as it drove west past an almond orchard on Highway 58. Kern Ag Commissioner Glenn Fankhauser said Friday none of the five people aboard, including three special-education students, reported feeling sick after the bus drove with at least one window open through what appeared to be a mist of the chemical Asana, which according to the manufacturer is toxic if inhaled and can cause cancer and genetic defects….The preferred practice for avoiding such instances is to have a “spotter” who warns the spray machine operator of oncoming vehicles. The applicator is in violation if even a small amount of the pesticide lands on the vehicle.