Children exposed to second-hand tobacco smoke may become snorers, scientists claim.

An analysis of existing research suggests their risk of becoming snorers rises by up to 87 per cent, if regularly exposed to lingering cigarette smoke.

The odds of youngsters going on to become snorers rose by around two per cent for every cigarette smoked daily in the home.

Chinese scientists reviewed 24 studies that included nearly 88,000 children to come to the conclusion.