Yes bro. Our brains have entire webs of associations that we make during our life story. Foods, smells, colors, people, places, etc., all have a particular meaning to us due to our experience around them. It’s not to say that you wouldn’t of started stuttering in Texas at some point, but the story in your head about Texas was fairly blank, so no mental forces were pulling you towards stuttering. Use this is encouragement that you can work through some emotional issues/mental programs/thinking habits that you have in Chicago. And create a mental story that is more accurate and flexible so that you can express yourself more freely.