How do get smell of smoke from a diaper bag?

I bought a new diaper bag off of Ebay and failed to see that it did not come from a smoke free home and it just reeks!! I've let it air outside for days, sprayed febreeze and even put it in the dryer with a dryer sheet for awhile. Not sure what material it is made of, can't wash it says to wipe clean. Is there any way to rid this of the nasty smell?