I love the smell of first time firing up a brand new toaster. I’ve only experienced this like 3 times in my life but it’s immediately recognizeable and very pleasant smell. Some protective oil on the coils I assume.

Another is suede or something similar. I can’t quite pinpoint the exact source of it but I remember my cousin’s doll house having this kind of “electric” smell to it and now few years back I bought this used leather jacket that smells quite similar.

Also the battery compartment of most remotes.

EDIT: This isn’t even answering the question but whatever