fly around
To move through the air around someone or something (who may or may not be mentioned specifically after "around"). Ugh, there are so many mosquitos flying around tonight! Why are so many gnats flying around us all of a sudden?
fly around someone or something
to soar or float in the air near someone or something. We saw seven helicopters flying around the stadium. A bunch of mosquitoes flew around me.
fly around
to soar or float aloft randomly. There were insects flying around everywhere. Planes flew around all day and all night, making it hard to sleep.