I have a very stinky antique chest that over the course of testing every known odor removal, I finally got it down to almost unnoticeable. Vinegar, coffee grinds, and baking power/soda helped kill the stink a little. Also sunshine during a sunny day is good. I'm not sure if you know where the stink is from or if you know where you spilled it, but if you do, then spritzing some vinegar in that area may help. Or wetting the trunk carpet and then sprinkling a modest portion of power (and then sucking it up when it's dry could help) The power absorbs the wetness and also pulls the odor in with it.
Good luck with your battle!