Coil pack? Here's some info:
http://www.babcox.com/editorial/us/us89920.htm 4 cyl. or V6?
Some Advance Autos, that have the new testing equipment, can test coil packs (free!).
Don't know about the oil smell...probably something unrelated. Does it smell like burning oil? Did you change the oil recently - if so, could be spilled oil burning off exhaust - nothing to worry about.
Does it perhaps smell like antifreeze? Could be leaking heater core. Coolant level OK? Windows fogging or film on windows? Wet carpet?
