HTG Supply’s selection of travel bags and backpacks are carbon-lined to prevent odors from escaping. If you’re prone to carrying smelly plants, gym socks, or anything else pungent, our Carbide carrying bags should serve your needs well. Sleek, dark, and designed for everyday use,…these backpacks can be used to lock in odor for years. To recharge the scent capturing ability of these bags, just invert them and lay them out in sunlight.