|Puff ball releasing cloud of spores|
Emilie Dressaire et. al. have reported the finding that a mushroom can actively cool the air surrounding them and consequently create upward air currents eminating from the mushroom itself, and spores are carried away in those air currents.
So even in the stillest of air, a mushroom can effectively disperse its own spores far and wide!
The author of the Scientific American story (Katherine Harmon) has released an audio podcast describing the finding