Smoke coming from under the hood?

Hello, most likely it is an oil leak onto the exhaust manifold. But have you opened the hood to check, when it starts to smoke, just open it and take a look. An oil burning smell and an electrical smell are quite different. If you smell a melting plastic type of smell that might be an electrical short, but you will probably find oil leaking out of a valve cover onto the exhaust manifold. Do you have any warning lights on the dash board on?

https://www.2carpros.com/articles/engine-is-leaking-oil

Valve cover leaks are common on every vehicle, especially at higher mileage. All kinds of seals on engines eventually leak. You should be able to see where any oil is seeping out of a valve cover seal. It can be anywhere along the entire left side of the engine since you are seeing it on the driver side. But here are some diagrams to help you understand what gasket you're looking at. Valve cover gaskets are not difficult to do, it's mostly removing smaller parts on top of the engine. The biggest deal is keeping everything clean when reinstalling the valve cover. There are 12 to 13 bolts that need to be torqued in a sequence, which is on the diagrams below. On these it looks like there is a gasket and some sealant used, which is usually applied in the corners where the gasket may not seal as well. But that is something you would see while removing the old gasket material. Just not dropping any old gasket into the oil passages or valve cover area while the cover is off is very important. If you're not comfortable with engine work, having the valve covers done shouldn't cost much. But take a look at the lower section of the engine on the driver side with a flashlight and look for oil dripping. It's obviously a slight leak now, but it will get worse in the near future. But like I said every vehicle eventually leaks oil from somewhere. It's a good idea to replace the PCV valve while doing the gaskets. Diagrams 6, 7, and 8 are for the PCV valve. Most oil leaks start when the PCV valve gets gummed up with carbon and oil. The positive pressure is not allowed through the PCV valve at that point, so it starts to push out of the seals instead. The PCV valve is attached to the valve cover, this one has an electrical connector on it because it has a heater element built in. But on the 7th diagram the valve cover is marked in Green and the PCV valve is marked in yellow. With instructions on replacing it.
The last diagram has the part number for the PCV valve in case you need that as well. Because it has a heater element, that's something I would get from Ford, because an aftermarket part might not have the heater section of the valve.