It’s thought that this was caused by a massive influx of carbon dioxide from major volcanic activity that acidified the oceans and raised air temperatures.
But I would suggest that also if you have something that's not acidified and you have the discoloration and you have the tops popped up like that, throw the whole thing away, jar and all.
These emissions are expected to grow by nearly 50% over the next five years, all while the planet continues to heat up, acidifying the oceans, igniting wildfires, throwing up superstorms and driving species to extinction.
When that sulfuric acid rains down, a set of acid-base reactions take place that damages limestone and metal, and acidifies the water supply, making life harder for fish, coral, salamanders, and pretty much everything else.