A way we could take them when needed for certain conditions, and not have them effect our gut bacteria we're all so concerned with.
Chemists Develop Switchable Antibiotic:www.sciencedaily.com/releases/2013/09/130916091019.htm
"In addition to switchable antibiotics not burdening the environment, they could also be used to treat very specific areas in the body. Feringa: 'You could take an inactive antibiotic for a skin infection and then activate it at the site where it is required. No useful bacteria in the intestines will be killed this way."