I adore the sound and [the] smell of the rain falling at a late quiet night.
When should I keep the second “the” in the sentence?
I adore the sound and [the] smell of the rain falling at a late quiet night.
When should I keep the second “the” in the sentence?
You would use the sound and smell to refer to the combination, but the sound and the smell to refer to them separately, for example if like the sound and you like the smell even when they are not together.
The phrase "at a late quiet night" is odd. "Late at night" is standard, but "quiet" doesn't fit into it well. Perhaps "late on a quiet night" or "late at night when it is quiet" would work.