Would an airborne Reactive Oxygen Species be dangerous to humans or animals?

Lungs are vulnerable to endogenous and exogenous sources of ROS insults. They are well equipped with antioxidant defenses to negate normal oxidative insults. However, when the oxidative defenses are overwhelmed by formidable oxidant influx, injury results. ROS are frequently associated with many pulmonary diseases. They are increasingly being recognized as mediators of early cell injury in lung diseases.