On Rosie's scent: (oh god I just had a terrible idea - cheetos and mountain dew!) but seriously uh... I got nothing. I'm sure he can smell things that don't exist in his universe and still know that it's magic! but... idk all I can think of right now is the Discworld's version of Primordial Soup. Which is in my copy of Nanny Ogg's Cookbook.
no subject
On Tess's: Plastic roses, got it.