The 23-year-old underwent microsurgery on her vocal chords to stop persistent bleeding from a benign polyp.
And George reckons that she should look after her throat better now, saying: "If you're a singer and you smoke it really isn't a great idea.
"I gave up smoking six months ago which was the best thing I ever did. I used to try to convince myself it made me sound jazzier.
"It was very difficult to give up but I'm so glad I did."
Of course George might be accused of being a tad hypocritical, since he waiting until he was 49 to quit the habit, but we suppose it's the thought that counts.
Adele is reported to have been lined-up to perform in the final of The X Factor next month.
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