bioaerosol

noun

bio·​aero·​sol -ˈer-ə-ˌsäl, -ˌsȯl 

: a tiny, airborne particle (such as a fungal spore, pollen grain, endotoxin, or particle of animal dander) that is composed of or derived from biological matter

Note: Bioaerosols can produce significant health effects by spreading infectious disease or triggering allergic responses or respiratory irritation.