Fire Breath sound effects, royalty-free and cleared for commercial work. 3 libraries carry this tag, most of them filed under Creatures & Monsters and Ambience.
Recordists here also tag Dragon, castle and Growl, which is worth a look if nothing below fits.
Dragon sound effects featuring over 250 designed roars, growls, fire breath, wing flaps, footsteps, tail swipes, and landing impacts with juvenile, giant, and underwater dragon variations for fantasy game and...
This comprehensive medieval fantasy audio collection features 1400+ files, including sound effects for taverns, spells, dungeons, monsters, and dragons, with multiple variations and high-quality recordings in both WAV and MP3...