A historical timeline of infectious disease transmitted in aerosols - Pre 1900
Years represented in this timeline: 400 BCE through 1888 CE. What’s represented is clear knowledge that many diseases are airborne, and the Covid-19 pandemic strategy of not indicating airborne/aerosol as the predominant transmission route was a major mistake.
The same particle size caveats for airborne/aerosol vs droplets of the main historical timeline page apply. Obviously the further back in time the reference is the less able the world was to inspect particles, virons and bacteria.