Here's why:
* Regional differences in vocalization: Just like with speech, the way people use their vocal cords and mouth when coughing can vary slightly depending on where they're from. This can lead to subtle variations in pitch, tone, and even the sound of the cough itself.
* Individual differences: Even within the same region, people's coughs can sound different due to variations in their vocal anatomy, respiratory health, and even their current state of health (like a cold).
So, while it's not a classic "accent" in the same way as a way of speaking, people's coughs can definitely have regional and individual variations. It's a subtle but interesting aspect of human vocalization!