I would first try Febreeze ing them and putting in a plastic garbage/storage bag for a few days. If you can deal with febreeze, that is. Do this outside, if possible. Leave for a few days. Take them out of the bag outside as well. If current weather in your area permits, leave them outside for a couple of days. This is why, as a smoker myself, I don't do swaps, etc. I know there are plenty of people that the smell is horribly offensive. I ALWAYS advise anyone I am trading/swapping/donating things to that this is the situation in my home and give them the option of not accepting. I always febreeze and put into a ziplock bag anything that I may be sending along with a note as to state of fabric/smell so they can treat/not use accordingly.