Charcoal is a life saver. Many years ago, my father and I ran bank poles for a weekend. Upon returning, we were tired and forgot to remove the chicken livers we had been using as bait from the trunk of his company car. 2 days later, it was very hard to get near the garage. We removed the rotten meat and my dad had me alternate baking soda and coffee in the trunk, vacuuming each in turn. Soon the car smelled like a dead animal that drank coffee. A friend mentioned using charcoal. After a couple of days, the car was back to somewhat normal. Being the boss, dad had his car traded in first, before his salemen got to upgrade. By that time, everyone hd heard the story and no one objected. Dad always claimed he could still smell the rotten meat, but I never could. I have used charcoal as a deodorizer ever since.