Somehow, I missed
JD-EE's post on electrical smells.
As a long-time Hammond Organ fixer (over 40 years), I can tell you that the so-called "electronic smell" is often the smell of:
a) burning/melting plastic (often insulation)
and/or
b) over-heated transformer components, such as wax, oil, and the like.
Ozone itself is a different smell. Lyman's speculation can never be verified as truth or not. We weren't there; we can't smell it. But it walks like a dog, barks like a dog, etc. etc.
OTOH, burning plastic is generally extremely toxic, so now we can add fuel to the fires of speculation: PF was maybe poisoned by toxic fumes(???).
Off to search for JD-EE's post.