Is there any truth to babies shouldn't look in the mirror when teething??? My 11 month old daughter…

Is there any truth to babies shouldn't look in the mirror when teething??? My 11 month old daughter walked out into the hallway today and she have a full length mirror on her room door and looked into it and screamed at the top of her lungs bloody murder. Then I was told to move her and place her back to see and sure enough when we went back she let out the scream again once I removed her she was fine any thoughts on this mommies???