hehehe, I love my stinky Momiji smell!!! (I know I'm strange..)
But I really don't think she is stinky, since she gets a bath every week.
But I think yorkie's beard (I mean around nose area) get stinky since dog love to stick their nose on the grass or on peepad to sniff pee and poop....
And also food sticks to the hair around nose and mouth so it gets stinky.
But I think it isn't only yorkie, any longer hair breed get to be the same, IMO.
I wipe her face every morning but by the 7th day, she doesn't smell too good...
But I still sniff her and tell her "You are stinky girl, but I still love you!!"