In this setting, most if not everyone has one or more personal drones. Think robotic hummingbird: same mode of flight, same speed and maneuverability, but no lungs. Instead of internal organs, they have your general robot innards: circuit boards, battery, motors, &c. What effect would tear gas or other fine particulates (other crowd-control gases, smoke, dust) have on these drones? Would it impair their ability to fly?
I am specifically asking if fine particulates in the air would effect the flight mechanism. For the sake of this question, you may assume that the drones are sealed such that no gas or particulates can enter.