“‘The challenge is saying all these really scary things, but in a way that people aren’t frightened,’ said Debbie Irwin, a New York-based voice actor who also does medical narration. Irwin has done voiceover work for hospitals, medical technology companies, and drugs like Surfaxin, a treatment for a respiratory condition. The tone Irwin tries to take? ‘Warm but factual,’ she said. ‘Absolutely I’m gonna sound like I know what the hell I’m talking about.'”