Yeah it usually does, if you smell something you should go see a mechanic to get it checked out, the oil can catch fire and ruin your engine.
You may have a oil leak, and oil us leaking onto the hot motor making that smell
Oil leak Burnt oil smell as oil spills on hot engine
Yes, the oil may be leaking on a hot surface and burning. You could smell this inside the car.
If there is an oil leak inside the engine compartment of the vehicle. The defroster could have some of the smell go into the cabin of the car. The engine should be checked for any oil leaks.
exhaust leak or fuel leak
Sounds like you've got burning oil, probably due to a leak.
You might have an oil leak that gets on to the exhaust manifold. Check the gasket around the upper part of the engine.
Freon is odorless; you cannot smell it.
A sweet smell is usually coolant being burned, check your coolant level and oil ( look for milky appearance ) as it may be a head gasket leak. A coolant leak on the outside of the motor may indicate a leak somewhere in the radiator or one of the hoses. When an AC line is leaking I have heard some people describe the smell as sweet.
Look for an oil leak.
Most commonly some oil was spilled on the motor or exhaust. As long as there is no leak then the smell should go away in a day or two.
in some cases yes you will have an oil leak