Amazon: activated charcoal
12 Pack Bamboo Charcoal Air Purifying Bag, Activated Charcoal Bags Odor Absorber, Moisture Absorber, Natural Car Air Freshener, Shoe Deodorizer, Odor Eliminators For Home, Pet, Closet (6x50g, 6x150g) 4.2 out of 5 stars. 6,911. $20.98.