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