I really like the smell of certain oils like Maxlife, but gear oil I can only handle from a distance. Got some gear oil on my lip one day because I was filling the rear end in the dark and had to hold the flashlight in my mouth. That stuff will make you spit over and over.
Another good smeller is Mobil 1 ATF!
Now it really gets bad if you crack bottles in the store to smell them.
There was a guy posted that he would blow into oil filters in the store to check the antidrainback valve.
I have grown to actually like the smell of oil. Like, when I'm underneath my car draining it, that smell hits you...ahhh...then you get dirty oil all over your hands and then the bliss ends