Adele thinks her voice has "weakened" since she quit smoking

Speaking to Canada's 'etalk', she said: "The people with the best voices, they always smoke. I've given up smoking and I'm convinced that's made my voice weaker."

And working with chain-smoker Bruno Mars on her hit track 'All I Ask' last year made her realise how much she misses smoking.

She explained: "Bruno smokes like an old woman. My make-up artist will stink after having a fag. I had never noticed it before."

But, although she wishes kicking her addiction half a decade ago hadn't altered her voice, she's pleased she's no longer got stained fingers.

She added: "But my fingers ain't orange any more."

And cigarettes aren't the only thing the 28-year-old singer - who has three-year-old son Angelo with her partner Simon Konecki - has given up over the years as she's also been warned that scoffing cheesy pizza - her favourite food - could damage her throat and give her acid reflux.

She told her fans at a show recently: "I can't eat pizza anymore! How bad is that? Because it's got cooked tomatoes on it which are bad for your throat and give you acid reflux. How bad is that, I can't eat pizza."

Despite how much she loves naughty grub, Adele is determined to do all she can to prolong her voice after she suffered a haemorrhage on her vocal cords in 2011, which led to her axing her world tour in order to undergo surgery.

Speaking in 2012, she said: "I had laser surgery. [They] put lasers down your throat, cut off the polyp, and kind of laser your haemorrhage back together and fix it. If I decide to go on a 200-date world tour, it would happen again."