Of her role in Planet of the Apes. 
 Interview on Cinema.com, 2001 http://www.cinema.com/articles/547/planet-of-the-apes-interview-with-helena-bonham-carter.phtml
                                    
“It's definitely a different world. Smoking is bad for your voice, for sure, but you learn to function in that world of bad. Now I'm in better shape, and I'm much more physical onstage, but I have to watch getting winded. Once I'm winded, I don't sing right. I would have smoked three cigarettes already during this interview”
The quote "It's definitely a different world. Smoking is bad for your voice, for sure, but you learn…" is famous quote attributed to Chris Cornell (1964–2017), American singer-songwriter, musician.
            laughs 
Responding to whether quitting smoking has helped his voice.** Rolling Stone - Q&A: Chris Cornell, 2005-14-07, 2006-07-03 http://www.rollingstone.com/artists/audioslave/articles/story/7482813/qa_chris_cornell, 
Audioslave Era
        
Help us to complete the source, original and additional information
Chris Cornell 71
American singer-songwriter, musician 1964–2017Related quotes
"Q&A: Tracey Ullman" http://www.newsweek.com/newsmakers-127011 (Newsweek, 19 September 2004)
"Not so much loud as Proud; M People singer Heather Small may have a powerful voice, but she has an enemy which won't go away - stage fright," in the Scottish Daily Record (15 July 2000) https://www.thefreelibrary.com/Not+so+much+loud+as+Proud%3B+M+People+singer+Heather+Small+may+have+a...-a063530480.
                                        
                                        That's what a reasonable person, a person with good manners, would do. 
Interview with Marion Finlay, "Hockney on … politics, pleasure, and smoking in public places," FOREST Online (28 July 2004) 
2000s