ABOUT SCIENCE EXPERIMENT WITH SALT AND WATER

Whenever a stale egg floats, it does so as the water is holding it up. If a stale egg floats in pure water it needs to be significantly less dense compared to the water alone, even though a clean egg that sinks needs to be additional dense than the water. Can you think why a stale egg might be a lot less dense than a refreshing egg?A salt lava lam