PARIS — Smoking in cars raises levels of dangerous fine-particle pollutants to many times the limit recommended by the world’s health agency, a study published on Monday said.
The average peak during smoking trips was 385 mcg/cu.metre, with the highest being more than 880 mcg/cu. metre.
In contrast, particulate levels during non-smoking journeys averaged only 7.4 mcg/cu. metre.
The type of fine particulate that was measured is less than 2.5 micrometres in diameter.
These very small particles are considered dangerous because they can lodge deep in the lung, causing irritation.