Assuming this is a similar facility to the prototype facility at the University of Tennessee no one would be able to casually walk near it. The smell is profound. Additionally, the facility at the University of Tennessee is very secure. It is enclosed inside of a very high chain link fence. Visitors don't just walk around and look at the bodies.
Angela has a very bad sprain that turned her ankle black and blue. She could barely walk on it and yet within a day, two at most, she is walking around as though nothing ever happened. Not only that, but she is able to go back to the rink to resume skating lessons. Unless she was healed by a miracle worker, it is not possible for an injury like that to heal in a day or two.