As I travel around the wasteland, there are times when the geiger counter unavoidably starts ticking rapidly, and I need to pop a Rad-X, or even put on a Hazmat Suit. Some of my companions will remark on this as well, however, I'm not sure if they're actually affected by the radiation.
Does exposure to radiation have an effect on the health of my companions? If so, is it the same for all of them, or, for example, are robots immune? What about Synths? Are Strong and Hancock healed by it?