With Vayu gone, having said that, human beings grew to become asphyxiated and struggled for breath. So as to draw the wind god out of hiding, the devas petitioned Brahma to mend Hanuman's wounds, which he did. Also, the gods observed to it that Hanuman was blessed with several https://www.youtube.com/watch?v=6cAOQp6Twlc&t=7s