Thank you. Sorry for the delay in getting back to you.
You can do an experiment with your grandson so that he can experience what a truly rotten egg is. Afterwards, he will then know that squirtie eggs are not rotten!
Have him work with you from the start so that he's part of the process.
What you do is you take an egg and you gently poke a hole in the top of it. Then you keep that egg out and in a warm place for at least a week.
That nasty sulfur smell will start churning inside the shell.
After a week, you and your grandson crack that egg open and let your grandson take a whiff of that.
Then you explain how THAT is the smell of a rotten egg and ask him if his squirtie eggs smelled like that! Of course the answer will be NO!
You convince him by showing him and making him a part of the process. He will draw his own conclusion.
Good luck to you!
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