2,800 litres of air 2,800 litres of air 2,800 litres of air 2,800 litres of air an exposure 2,800 litres of air How Chemicals Enter the Body exposed to construction fumes breathe air How Chemicals Enter the Body 2,800 litres of air How chemicals enter the body 2,800 litres of air English 2,800 litres of air Canadian Centre for Occupational Health and Safety