Anyone who vacations in Las Vegas knows something about taking chances. One of the biggest appeals of visiting Vegas is the potential for anything to happen. But, while everyone hopes lady luck smiles on them, realistically the most you’ll probably return home with is a lighter bank account and a need for sleep. Odds are good, however, that no one expects their vacation souvenir to be a potentially deadly respiratory illness. Yet, recently the Aria Resort and Casino in Las Vegas, Nevada was linked to six cases of Legionnaires’ disease among guests visiting the resort.