This happens every day in surgery
And it basically smells like burnt hair.
Surgeons use diathermyelectrocautery as a device to pass current through the body. Depending on waveform the diathermy will either cut through tissues, be used to stop individual bleeding vessels, or fulgurate, which looks like a Palpatine/Thor lightning effect. This concentration of current vapourises tissues. I only use it on muscle/tendon/ligament, so the smell from other tissues may vary, but the closest smell is to light a few strands of your hair.
Try it at home (strands of hair, not diathermy) and you’ll be able to mull over all the adjectives you need. Just don’t do it indoors as it really lingers.
Informally, I tend to call diathermy the ‘lightning stick’ at work, and ‘knife and fork’ for the scalpel and forceps.