Smelling your oil is the most subjective, and least accurate of metrics to apply by an owner.The dipstick smells like gas to me but off course the service manager at the dealer says it doesn't smell like gas.
Reason: it is completely subjective... and everyone's nose calibration (such as it is) and experience is different. A dealer who services hundreds of vehicles a week... is going to be in a better position to know "normal" from "abnormal" where oil smell and color is concerned.
The color of the oil is a pretty close second, due to a lack of understanding what is normal for a modern DI turbocharged engine.
Oil level, and the presence of oil rise on the other hand.. is fairly objective (you can measure the rise in mm), as long as you actually knew the oil level immediately after an oil change (service providers, dealers or otherwise, have been known to over fill, for example).
Oil Analysis is the only actual real objective measure of the quality of your engine oil. Of course that costs money to do, but it does provide some quantitative data for peace of mind, or concern. It can even show if your engine is experiencing abnormal wear (particles) inside the engine... something some suspect, yet I have never seen an OA so far shared here that actually demonstrated such a concern as real.