No. A chalaza is a normal part of an egg and is not itself a sign of spoilage.
The Simple Explanation
So that strange white strand that nearly made me throw away my breakfast?
It wasn’t a worm.
It wasn’t some mysterious contamination.
It was simply a normal part of the egg that I had probably eaten hundreds of times without ever paying attention to it.
Sometimes the things that look most unusual are completely harmless once we understand them.
The next time you crack an egg and notice a white twisted strand near the yolk, there’s no need to panic.
It’s called the chalaza.
It’s supposed to be there.
And your breakfast can continue as planned.