No, I don't think it's sign specific. I know a Scorpio that loves the smell of gasoline. I hate the smell (cancer) but I love the smell of horses, rain, hay, leather (OMG...mix horse, hay and leather with a little clean man smell and I'd be all over that!!), cut grass, snow.
The smell of pain? Hah. Dunno about that one. Fish, no, even though it doesn't bother me, I got used to it over the years. Gasoline and nail polish, any time any day. I've larned to love the smell of all kinds of chemicals as a graphic design student.
I'm mechanically inclined, so I don't think there's anything weird about smells emanating from vehicles, unless it's battery acid. @_@ Battery acid and burnt spark plugs(burnt ANYTHING from a car, even) might be the smell of pain because of the thought of what's happening and how much it's gonna cost to solve the problem. The only good burnt smells come from hickory smoked and grilled food.
Also, old book smell is great as long as it's not mold that will reduce you to sneezing.
Anyone here likes weird smells?
For instance I really like the smell of gasoline, fish, pain, nail polish.