How to get rid of spilled coffee scent

I've always used cat litter. It's absorbent enough that it tends to pull the oil out of the concrete. Not sure how well it would work on a stain once it's set in for a while though, but it's cheap enough that you don't have much to lose by trying.

I have read that an iron can help lift those water marks off the table. If I remember correctly...

1. Lay a dry cloth over the mark
2. Heat the iron with the steam turned off
3. Briefly iron the spot, gradually increasing the length of time you apply the heat

I haven't tried it myself, so try it at your own risk.