In my case, I unloaded the groceries from the trunk of my car. It was 105 degrees out and my mind seemed to forget something. I did not realize I forgot to unload the eggs until the next morning. It was close to noon and my husband looked at me and asked if I left them in the car. Oh my, that was the only conclusion. I grabbed my keys and ran out to the trunk of my car. In the corner trying to blend in was a bag filled with a carton of 18 eggs.
It was another scorching hot day, but the eggs did not feel as hot as the outside air. I thought this may be O.K. My husband said, "No, those are now bad". I searched the Internet for an answer and there it was.
Put an egg in a bowl of water (cold water) and if it floats it is bad and if it sinks it is good. Why? When the egg goes bad the yolk turns to Hydrogen Sulphide causing the float. If an egg bobs a little it just means the egg is older, but not bad. My eggs were all good. Yeah...
I checked at least 3 sources for this information. It is a good idea to check 3 or more ( more if there is conflicting information) sources for all information you search. This gives you better insurance that the information is true/real. Does not mean anything is 100% because us humans are still learning new things all the time.