Look for defective gaskets of the crankshaft case, differential, oil pump.
Yes, the oil may be leaking on a hot surface and burning. You could smell this inside the car.
Could be several reasons but most importantly, get the car checked out soon. If you are smelling exhaust inside the car you could get sick or worse.
Yes antifreeze is sweet smelling, burning oil stinks and gasoline is, well gassy.
You probably spilled some oil on or near the engine, making it burn when the engine heats up.
Yes, in the combustion chamber.
Aga may be smelling of oil due to the presence of oil residues from cooking or food preparation. If it's a type of stove or oven, the smell could also come from burnt oil or grease buildup inside the appliance. Additionally, if Aga is used for heating, it might emit an oil smell if the fuel is not burning cleanly or if there's a leak. Regular cleaning and maintenance can help prevent such odors.
No there should not be any oil where you plug your spark plugs into
The oil pump is inside the engine, generally not accessible to the average do-it-yourselfer.
You may have a leak of coolant. Take your car to a shop and tell them you are smelling coolant and may have a leak.
Could it need a new occur valve
Basically it's inside the oil pan at the front of the car, by the crankshaft sprocket. It is driven by the crankshaft.
the same as a car or fourwheeler.. as long as it lubes the inside of the motor