Well my plan worked, sort of.
The only problem was that the baby got excited about my daughter’s cup of Gatorade (a rarity in our house) and she decided to lick the germs of my daughter’s cup when we weren’t looking. So she had a little tummy-ache a few days later. But no one else got sick. She was fine within 12 hours.
I guess I should have included this to the list of what to do or not do for a stomach virus:
DO NOT LICK THE GERMS OF THE SICK PERSON’S CUP.