Sentence examples for filling with from inspiring English sources

The phrase "filling with" is correct and commonly used in written English.
It is typically used to describe something becoming full or filled with something. Here are a few examples: 1) The room was filling with the smell of freshly baked cookies. 2) Her heart was filling with gratitude as she read the thank-you notes. 3) The balloon slowly rose up, filling with helium. 4) The stadium was quickly filling with excited fans. 5) The streets were filling with people as the parade began.