On the emulator version, if your emulator as a button you can press to emulate blowing, then that's what you use. You may be able to use a microphone, but if you don't have that or a button then you can't.
Blow into the mic in front of the fire
in the goronon temple
Blaaz
in the temple of wind
it's in the courage temple.
In the Temple of Courage.
Get it in the Temple of Wind
inland of wind
there is no bombachu bag in the temple.
finish goron temple, ice temple, and pyramid temple
which part
in the temple of wind