My wife refuses to ever eat them again because of that. Once I started fermenting them I’ve had zero issues. Your mileage may vary. Just be sure they are fully fermented: after three weeks of so get one and slice it in half.

If there is an opaque center they aren’t done yet. All the flesh needs to have a translucent quality. Then they’re done. Still, be careful and only eat one then see how that goes first.