Boil a large pot of salted water and cook the pasta according to package instructions. Reserve about 2 cups of pasta water before draining.
Melt butter in a large deep pan over medium heat. Add crushed garlic and sauté for about 1 minute.
Pour in half and half and bring to a gentle simmer. Stir in Italian seasoning and cook for 1-2 minutes until sauce thickens slightly.
Add crème fraîche and simmer for another 2 minutes, stirring frequently.
Transfer drained pasta directly into the pan with the sauce. Toss to coat, adding reserved pasta water if sauce is too thick.
Stir in grated parmesan until melted. Gently fold in smoked salmon strips.
Sprinkle fresh parsley on top and season with salt and pepper to taste. Serve immediately.
Notes
Store leftovers in an airtight container in the fridge for up to two days. Reheat gently on the stove or microwave, adding a splash of milk or cream if needed.