A test would be nice. It's always good to know the real science behind what we do rather than just trial and error opinion. The PVC bottle didn't have an odor on the outside, but a pretty strong one when I took the cap off and smelled the "inner" air. Since you've had some with wine in for 4-5 months, did you notice any off-flavors? More than oxygen permeating the bottle, I'm worried about chemicals leaching out of the plastic. Maybe there's no BPA, but there could be other bad things. Any idea about that?