The information about Dash that I would have used was that she was the one out of the whole main cast that hated being clean the most. Dash would be more comfortable with the stench of a hard day’s work or just from lazing about. She would be created to contact Rarity’s uptight behavior of every item and everypony needing to be completely clean at all times. She would be the stinker of the group. She would also be the one that actually might have a secret case of diapers to put on if she truly wants to relive being a filly again.
It smells like horse, and Dashie enjoys that