Why do my old glass beads smell like vinegar?

I am an avid bead collector, and I store my glass beads in plastic boxes that have individual compartments. One thing that I notice is that periodically they smell like vinegar, especially the older recycled glass beads and the ones from India. Can anyone explain to me why they make this smell? Thanks!

One Response to “Why do my old glass beads smell like vinegar?”

  1. cltd Says:

    Are you sure they're glass? I know that certain plastics will develop a vinegar smell and some will even break down and have a horrible sour milk/rancid cheese smell. Take a hot needle to the bead and see if it melts, if it does, it's not really glass.

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