Do Motor Oil's have there own unique Smell ?

Where I go, an oil change is $189 at a Mack dealer quick lube in Des Moines, IA. Up to 3 filters, name brand 15w40, levels checked in all fluids including diffs and tranny. I do my own greasing so never got that from them. I am too much of a stickler about how much grease goes in and doing a very thorough look at everything underneath. I just don't have the confidence that a lube tech will do as good of an inspection on things that I can. And one doesn't need to have grease all over the place because some tech just kept pumping away with that air powered, high speed grease setup.