To keep yourself and the omelets safe, you should break the eggs against a flat surface or against each other to create a large enough crack so that the eggshell (small pieces) don't fall into the egg itself. The risk of the eggshell in the omelet is that you could possibly be giving yourself salmonella which is a dangerous situation.
The answer is true. They fight things like the flu, but they don't fight bacteria like antibiotics.
They have a good amount of water in the plant.