Look it up in the Webster dictionary that. That is the meaning of word.
I know you want to twist the word “Airborne”, but I am giving you the official definition.
How can you say it’s not “Airborne” when it travels THROUGH THE AIR?
It travels through the air, but doesn’t meet the strict scientific definition of “airborne”
Neither does anthrax, unless it has been weaponized by milling. But do not go sniffing it either.