I'd agree...there isn't any reason to use odor barrier bags in canisters and cougars have little if any interest in human food.

While odor barrier bags do work the real issue with them is what Granny points out - you can't control smells from hands as you open and close the bag in the backcountry. The other issue I have had over the years with other barrier bags is the zip top being the weak point - they always go out first.

Raccoons, birds, rodents, skunks etc do more damage than big animals do when it comes to food. The issue being that people think of bears as being the danger....but there are more small critters out there.

Still, if the closure on the bags is improved over other styles, I'd love to hear about it!