With Vayu absent, nevertheless, human beings turned asphyxiated and struggled for breath. So that you can draw the wind god outside of hiding, the devas petitioned Brahma to heal Hanuman's wounds, which he did. Also, the gods observed to it that Hanuman was blessed with multiple boons of eloquence https://www.youtube.com/watch?v=6cAOQp6Twlc&t=7s