Baking soda may help in the wash water and vinegar
in the rinse water.

Kitty litter will get the smell out of most anything. I use it for musty smells. Put your quilt in a box or suitcase, with some kitty litter for a few days. I would put the litter in a cloth bag or lay it on a paper towel on top of the quilt.

Be very careful taking them out of the washer. They will be heavy and this is when the stitches are very vulnerable!

I use white vinigar and baking soda in the wash, did it 3 time, the smell was out. I also use this to unclog my toilets, sinks and tub!

I know what you mean...I have gotten some things in swaps, etc. that smelled of smoke. I quit about 3 yrs. ago and I'm very sensitive to the smell. I had to immediately take the offenders outside...I hung them inside my storage building (so they wouldn't be out in the weather)..dowsed them with Fabreeze and left them for several weeks. I couldn't bring them in to work on them even...so after a few weeks...finally the smell would go away..but its a tough one...good luck!

I had a lovely lady give me trash bags full of scraps to get me started. When I got home and opened the bags the smell of cigarette's was horrible. I washed all of them, put them out to dry, still couldn't get the smell out. I put them in the sun for DAYS, still they smelled. I put Fabreze on them, nope that didn't work either and today, some 6 years later, when I open the case I keep them in, the smell is awful.

You might also try baking soda. It's supposed to be a natural deodorizer.

I second this. Even the cold air will be far better than not airing. Do you have an enclosed (unheated) porch or mud room? That would be almost as good as outside if it is impractical to hang outdoors.

The lady that quilts some of my quilts smokes. When I get the quilt home I spray with fabreeze in a fragrance like lavender Let it sit then turn over and spray other side. That usually takes the smell out of them for me.

Washing would be best, however if you have one that cannot be washed try dry cleaning, or this: Put the quilt in a large plastic bag and put in clean UNUSED newsprint paper (available in packing area at Home Depot). Close up the bag in a warm place, preferably the trunk of your car for a few days, (even with cooler weather the car builds up heat). I have used this method to get rid of smoke and mustiness from old sewing machines. Your may have to change out the paper a couple of times until the odors are all gone. :-D