What is the film with the trolls or ogres who used to live underground or in sewers they were unhygienic and thought nice smells were disgusting pretty sure it is a cbbc or citv movie kinda thing?

The film you're thinking of is likely "Trolls" or "Trolls World Tour," where colorful trolls live above ground and have a very different lifestyle from the more unhygienic, underground-dwelling creatures. However, if you’re referring to a CBBC or CITV movie, it might be "The Trolls" from the series "Trolls: The Beat Goes On!" or a similar animated show. These stories often portray trolls or ogres with quirky habits and humorous takes on hygiene and smells.