Bamboo Charcoal Bags for drying room?

I had never heard of these Bamboo Charcoal bags till the other day. Was told they not only absorb bad orders and flavors but also helped eliminate mold spores that can ruin your crop. Is all this true? If so, what’s a good one to buy say on Amazon and how many would I need to hang in a 3’x3’x80” drying tent?