With Vayu Absent, nevertheless, human beings turned asphyxiated and struggled for breath. To be able to attract the wind god away from hiding, the devas petitioned Brahma to mend Hanuman's wounds, which he did. On top of that, the gods saw to it that Hanuman was blessed with multiple boons https://www.youtube.com/watch?v=ufkmD95y7fE&t=1s