Passive smoking is a major environmental health hazard. Environmental Tobacco Smokes (ETS) or Secondhand Smoke (SHS) damages the health around the smokers. A non-smoker is subjected to both ‘sidestream’ smokes from the burning tip of the cigarette and the mainstream smoke that has been inhaled and exhaled into the environment by the Smoker. Nearly four-fifths of the smoke that builds up in a room ..