Cleaning products a big source of urban air pollution, say scientists

Research shows paints, perfumes, sprays and other synthetic items contribute to high levels of 'volatile organic compounds' in air

Household cleaners, paints and perfumes have become substantial sources of urban air pollution as strict controls on vehicles have reduced road traffic emissions, scientists say.

Researchers in the US looked at levels of synthetic "volatile organic compounds", or VOCs, in roadside air in Los Angeles and found that as much came from industrial and household products refined from petroleum as from vehicle exhaust pipes.