That's a clean smell.The old stuff stuff has a smell like rubbing alcohol.
That's what I've thought for years also, but never researched it. I thought, how can metal be more leak proof when you have to weld the ends to make the container which, including the cap, provides 3 points of possible failure, but plastic is one continuous mold with no seams except for the cap. Good point about the insulating qualities of plastic, never thought about that benefit.There’s no way that plastic is porous, ever seen a plastic container filled with water leaking from a seal?
Ever seen a metal can filled with water leaking from a seal?
I know I’ve seen plenty leaking metal cans, whether it was water or not.
Plastic is also more stable in temp swings than metal. In other words, metal transfers ambient temp into the interior of the vessel far easier and faster than plastic does.