‘Airborne particles’ are the key words in this definition. Folks need to start paying attention.
Ebola is not, never has been, and never will be an airborne transmissible disease. Apparently, that nurse was protected against an airborne disease... the problem is that she was not protected against a direct-contact disease like Ebola.
You seem very sure of this. There is "airborne" (dry virus particles floating through the air), and then there is droplet/aerosol transmission, which IS an area of concern. Real live patients cough and sneeze. Hard vomiting may send droplets though the air.