The Reston Monkey House incident demonstrated pretty conclusively that Simian Hemorrhagic Fever is transmissible through the air. The lungs shed trillions of virus particles which are ejected long distances through sneezes. The particles can stay suspended in the air a long time.
I believe the movie “Outbreak” was based on that incident
Of course in Hollywood version, Dustin Hoffman saved the world by finding one cute little host monkey to make a vaccine
And this virus was truly airborne. It moved easily from room to room throughout the monkey house through the ventilation system.