Creating smooth, high-quality is a challenge, with car horns and accidental pauses two of the many obstacles necessary to overcome. Adobe Premiere Pro is attempting to make these points less of a nuisance with the automatic removal of any background noise or accidental "ums" that get muttered.
Adobe Premiere Pro should get rid of your "ums" and "hmms" with an update called filler word detection — an AI-based tool that does exactly what it says before deleting them from both the audio and any transcription. It can also identify and cut any long pauses you want out of the final version. Filler word detection works through Adobe's Text-Based Editing tool, which launched earlier in the year.