I used to have bizarre dreams. There were these two chairs in our living room, and I once dreamed that one of the chairs sawed my leg off.
There also was a 3 legged lamp in the back of the house that I always had a fear of in the dark. Much later in life, I inherited that lamp and still had an anxiety when I saw it in the dark. Recently, I threw the lamp out and am now no longer feeling any anxiety about a dark room.
Being the inquisitive mind that I am, I have often wondered about that furniture. Anxiety is an undefineable fear. There may have been some event(s) in my childhood where I saw that furniture during the event....but if so, the event is obviously repressed.