This is a seasonal smell but there is no reason you cannot be seasonal all year round. If you want to have a bathroom that smells of Christmas all year round, why not?
All you need is one orange, a handful of cloves and half a teaspoon of cinnamon. Cover the entire orange in cloves and sprinkle on some cinnamon or nutmeg, put your fruit in a bowl and leave it in an appropriate place in the bathroom.
By replacing your orange once a week will keep your bathroom smelling clean and fresh and spicy.