According to a new study in Pediatrics Journal, there’s such a thing as third hand smoke and it can cause harm even long after the smoking has stopped. Tobacco particles cling to surface areas that are later inhaled, touched and even put into our mouths. These studies show that just being in a room where cigarettes were once lit can have the same effects as exposure to low levels of lead. And, just like with lead the higher the exposure level the lower the reading score. In other words, smoking impairs your brain and those around you. But this is not a stop smoking campaign, just some info about the world of smoking. Do as you please with it.