Happened to me, but I was in a closed cab Wheel Loader. I hit a hive somehow in the ground/scrub brush. The came at me in full force, looked like a solar eclipse inside the cab. The cab went dark and it was high noon. Wife was walking towards me and saw what was happening and ran inside.
Happened to me once on a smaller scale without a cab, lucky for me the heat coming off the engine was so hot, they approached me but then backed off when they felt the heat. After 100 yards I out ran them. That was the last day I drove a tractor without a cab, never again.