PCBs were only used in oil capacitors and some transformers. Generally these were used in motor and grid power applications. The only consumer applications are some motor capacitors and florescent light ballasts.
Yeah I pretty much grew up (unknowingly) playing in an illegal unmarked chemical waste dump so it takes a lot to get my attention, but I opened up an old fluorescent desk lamp from the 60s I had that fried itself to see if it was fixable — and found a small piece of crumbly asbestos shielding about the size of a business card stuck to a big leaky ballast. Pretty solid toxic waste combo. City hazmat got a sweet vintage lamp that day, sadly.