Almost all young children, even those living in homes where no one smokes, have traces of tobacco nicotine on their hands, a US scientific study has found for the first time.
Little children tend to catch everything - carpets, tables, clothes, toys, etc. - and then touch their mouths and faces. This makes them particularly vulnerable to "third-hand" passive smoking (second-hand is when they inhale other people's smoke), coming into contact with the remnants of cigarette chemicals that remain in the dust and on the surfaces of objects.
Researchers from San Diego State University and the University of Cincinnati, who published the paper in the American medical journal JAMA Network Open, analyzed data on 504 children up to 11 years old and found that at least 97% had
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