The hot fiery wind is the breath coming out of his (Aghasura) mouth, which is giving off the bad smell of burning flesh because of all the dead bodies he has eaten - SB 10.12.23

Expressions researched:
"The hot fiery wind is the breath coming out of his mouth, which is giving off the bad smell of burning flesh because of all the dead bodies he has eaten"

Srimad-Bhagavatam

SB Canto 10.1 to 10.13

The hot fiery wind is the breath coming out of his mouth, which is giving off the bad smell of burning flesh because of all the dead bodies he has eaten.

SB 10.12.23, Translation

The hot fiery wind is the breath coming out of his mouth, which is giving off the bad smell of burning flesh because of all the dead bodies he has eaten.