Smokers Beware of the Third Hand

There is plenty of evidence that "second-hand" smoke - breathed when you are in the same room as someone smoking - can be harmful, particularly to children, and some parents adopt a strategy of never smoking in their child's presence.
However, Professor Jonathan Winickoff, from Massachusetts General Hospital, said this would not offer complete protection.
Toxic particles in cigarette smoke can remain on nearby surfaces, as well as the hair and clothing of the smoker, long after the cigarette has been put out, and small children are susceptible because they are likely to breath in close proximity, or even lick and suck them.
Other studies have linked this exposure to learning problems in children.
BBC report HERE

Related:
Why Smokers Struggle to Quit