The actress was told that she had an increased risk of having a heart attack or stroke because of the habit and decided to quit immediately after finding out.
Discussing the decision with Hello!, she said: “I threw my cigarettes away after leaving the [doctor’s] surgery.
Laila is best-known for her role in ‘EastEnders’ and she last popped up in Walford in 2016.
Back in June, the actress admitted she wasn’t a big fan of the show anymore, but refused to rule out a return.
I still watch ’EastEnders’, but it feels like all fun has gone,” she said. “It used to make people laugh. It’s not like that any more, it’s just not got the kick in it that it used to have.”