PEOPLE in Calderdale are invited to “Know Your CO” to mark No Smoking Day on Wednesday.

From Monday to Friday this week, Yorkshire Smokefree Calderdale is offering free testing of people’s carbon monoxide levels.

This will take place every morning from 9.30am to noon at the Laura Mitchell Health and Wellbeing Centre in Halifax.

Carbon monoxide is one of the 4,000 chemicals inhaled from tobacco smoke.

Calderdale Council’s Councillor Faisal Shoukat said: “This No Smoking Day we’re reminding people of the risks of smoking and particularly highlighting the levels of poisonous gases that are given off when someone smokes.

“We know the risks of smoking, but sometimes learning how it’s affecting your own body can be the catalyst to make the choice to quit for good.”