I've seen plenty of sparks in Newport Beach and along the Santa Ana River Trail in SoCal. When it got bad enough I'd report it to the local power company. I was thanked one night by an engineer for probably saving the high voltage line between the San Onofre Nuclear Plant and Disneyland. If any of you sense anything out of the ordinary near any power line at any volage report it quickly and stay away. The bad smell in Switzerland was likely Ozone generated by electric discharges.