1) Aurae 2) Odors 1) Bad smells 2) Noxious vapors 3) Offensive smells 
Exhalations. In the mid-nineteenth century, they were called "vapours" and distinguished into the contagious effluvia, such as rubeolar (measles); marsh effluvia, such as miasmata.
• (pl. ) of Effluvium
Exhalations. In the mid-nineteenth century, they were called 'vapours' and distinguished into the co
outflow in a stream of particles a noxious odor or vapor 
Exhalations. In the mid-nineteenth century, they were called "vapours" and distinguished into the contagious effluvia, such as rubeolar (measles); marsh effluvia, such as miasmata.