In the comments section of the latest FromPyrgos blog post, there was the following:
Those who have made the "dreck" claim seem to have no specific examples to provide, at least until now! So, on to this claim. First of all, there have been fake Chanels on the market for a long time, and there seem to be people faking old-looking Chanels (the web page that showed many pictures of such was down last time I looked for it). Secondly, unused bottles in this box, like these two, should hold up very well, and that seems to be the experience of just about everyone other than this person! Of course, it's possible the person is correct, and that's the price of "vintage hunting," though if he/she bought on ebay, there should be no issue at least getting a refund (just be persistent). And if he/she bought anywhere else, it would have been prudent to insist on sampling from the bottle before paying. That's certainly what I do! Also, how would you know the second you opened them? Nothing specific was mentioned, but the only thing that makes sense is that it smelled skunk-like or truly drecky. Again, nobody else seems to have had this experience, and why not sample the scent rather than just smelling what the air between the liquid and the cap was like? Lastly, oxidation requires oxygen and the molecules that react with it, so if a bottle hasn't been used, there is very little oxygen present in that small amount of space, and I don't think it's possible for that amount of oxygen to ruin the entire bottle of liquid - that seems to be a physical impossibility! Any chemists want to chime in here?