Chesterfield fire officials said a pest control company was on site to spray for mosquitos when the motor near the container used to spray the chemical accidentally caught fire. The fire engulfed the vehicle, and ultimately destroyed it.
Some of the chemicals in the truck started to run off toward a nearby creek, but firefighters were able to stop it.
At this time they said there is no threat to residents or the environment.
One person was taken to the hospital for smoke inhalation, according to officials on scene. Another person was treated for chemical exposure.
No word on their conditions.