David Edwards has been called a real-life Willy Wonka. The biomedical engineer has developed, among other things, inhalable chocolate, ice cream spheres in edible wrappers, and a device called the "oPhone," which can transmit and receive odors.Edwards is based at Harvard, but much of his work has been done in Paris, at a facility he calls Le Laboratoire. Now he's opened a similar "culture lab" closer to home: Le Laboratoire Cambridge in Cambridge, Mass.