“I went out of my way to supply you, Tom K, with the data and sources regarding filtering media you asked for. If I was snarky towards you it was only because I was trying to not say something mean. I’m sorry if I offended you.”
What got me upset was being called ignorant. I have been called any number of things down through the years, but ignorant has not been one of them. If that was not your intention, I am more than willing to let bygones be bygones. But I confess to wondering: If calling me ignorant was in lieu of saying something mean, what would mean have sounded like, and why would you have felt that way in the first place? ;0)
Regarding the meat of your post: The original intent of nylofume bags was for fumigation purposes, thus I have no reason to expect that testing them for the purposes of odor proofing a food supply has been done, and I certainly do not have the expertise/equipment to conduct such tests. As Franco posted above, the manufacturer has not done such testing. However, I do not think it unreasonable to assume that if it prevents gaseous molecules from entering the bag, it will also prevent them from escaping, since it is unlikely to be a unidirectional barrier. The idea of using them for food protection did not originate with me, but when I heard of it I looked up the manufacturer. When I found out what the bags were used for, it seemed very logical that they would work for preventing food odors from escaping the bag as well.
“almost did this research for you too, but then realized I already had just spent a bunch of time doing other research for you. Then you put me down for it. Maybe another time, but if you ask with this same tone, I’m probably just going to say no again…”
Let’s be clear, Jacob. You would not be doing the research just for me. This is a group discussion, and anything you come up with will potentially benefit more than just one person. I am already confident enough in using the bags to bet my safety and food on them. I would be very surprised if you found evidence to the contrary but, if you did, I would evaluate to it very carefully, as would a lot of other people, both current users and those on the fence. I think I have already made a pretty substantial contribution to the discussion and am inclined to let you run with your own suggestion. Or not, as you wish. As for my tone in replying to you, it was in the context of your comment about my ignorance. That no longer being an issue, I will apologize to you in return. Hopefully that will clear the air on both sides and allow us to engage on subjects of mutual interest in the future without acrimony.
“So Tom K, you were always expecting bear cans to eventually fail? Is this the general consensus? I thought bear cans were an indefinite solution, hence my surprise at their potentially growing failure rate in Yosemite.”
Let’s just say I wasn’t surprised that there were some failures. Initial design can’t anticipate all possible flaws, so failures were inevitable, IMO. Bears are intelligent, determined, and resourceful. As I said, they adapt, we correct for the failure, they adapt, and on and on. I even saw one photo of a Bearikade after a grizzly got done with it. Not a pretty sight. I doubt we’ve seen the last failure at this point. With this in mind, I also use a nylofume inside my Bearikade when I have to carry it, along with my usual no cook, low odor food, on the principle that eliminating as much odor as possible helps. But my basic principle is avoidance; I don’t usually hike where there are many people and, therefore, bears. Habituated bears. In that scenario, I seem to have been pretty successful so far with my nylofume bag setup. Do I think it is foolproof? No, but I do think I have reduced the risk to an minimal, acceptable level. For me.
Regarding the general consensus, I don’t know if there is one or, if there is, if it agrees with my personal opinion.