I feel you. I grabbed an older guitar from the auction site. It must have spent years in a household of smokers. Both guitar and case had a strong old smoke smell. At first, I was disappointed as I took additional projects at work to earn extra money and buy it (fortunately, the guys from https://writinguniverse.com/free-essay-examples/cultural-anthropology/ agreed to help me). But having surfed the Internet and tried several ways, I finally got rid of that smell. I mixed white vinegar with equal parts water in a pump spray bottle, misted the fabric until it was moist to the touch, and let it dry. The acid in the vinegar should kill most spores, but I'd test a small area first, to see how it affects any dyes. After that, I put the coffee ground in a little tub and inserted it into my guitar’s soundhole and its case, waited a few days, and then vacuumed everything. More than two months passed and I don't feel that smell anymore.