Don't know the name of it but the one I have is like a hard metal brush that sort of razors the excess coat away. If you google dog brush for undercoat it should come up with some good suggestions. Got mine off amazon I think
There is a facebook group of us who meet in Nottingham about once a month. One of mine stinks, fishy bum and stink breath,the other is clean as a whistle but thoroughly naughty and annoying. Not sure which is worse.
Aww, mine is naughty and smelly. Well technically he's not mine he's Mums but we live with parents at the min. He is such a lovely dog though and so docile, I can see why people choose pugs even though they smell.lol
We bathe her, she smells of the shampoo for maybe 2-3 days, then she goes a lovely spicy/biscuity smell for a week or 2, then the stink kicks in! Her nose wrinkle needs cleaning every other day to keep it fresh and clean.