I’ve looked up EN, ISO, and ASTM standards and there are plenty of standardization’s on how to measure scent etc, but I can find no standard on what a barrier (think OpSak) must show before it is called “odor-proof.” OpSak, SmellySack, and the entire marijuana dispensary industry says they have “odor proof” bags, but they offer no professional rating to back it up.
It’s often surprising that scent molecules can actually work their way through a bag material, but they do. Plastic is merely a bunch of carbons squiggled together, and scent molecules do get through.
Can anyone help me on this?
