I did not know that
In one of the documentaries, both David and Shirley stated that Danny would take showers in the studio, since he would often come to work dirty and smelly. Poor kid! David stated the cast and crew nicknamed him their "little onion in a rose path", or something similiar. LOL! It's on Youtube. Danny also joked his kinfolk were more "Manson Family" than like his tv fami!y.
In addition, Shirley and David spoke candidly about his romantic conquests in his dressing room. Naturally I am talking about ladies man David . Interesting video.
Danny hit the jackpot in working with costars who really cared.