Coronation Street is tackling a new issue of air pollution which will feature Maria’s son Liam.Fans of the soap will get to see the storyline take place from next week.It will see youngsters Liam Connor and Jack Webster play a game of footy in the street, where Liam collapses and starts gasping for air.This leads to the ambulance arriving for the schoolboy but the paramedics are unable to get onto the street due to double-parked cars.It will see the ITV long-running soap and Corrie character Maria beside herself and take drastic action as her son struggles to breathe.Maria’s shocked to learn from the doctor that air pollution caused by traffic fumes is a common cause of the condition.