Smoking involves an act of burning a substance for the purpose of taking in its smoke into lungs. These substances are commonly tobacco or cannabis . Combustion releases the active substances in them like nicotine , which are absorbed through the lungs. A widespread technique through which this is done is via smoking manufactured cigarettes or hand – rolling the tobacco ready for smoking . Completions directly associated with smoking claim the lives of all the persons who have been involved in smoking tobacco or marijuana for a long time. PREMIUM TIMES ; Groups write NBC , demand prohibition of smoking in BB Naija. The groups say since its inception , Big Brother Naija has been notorious for promoting smoking among housemates. According to projections by the authors , nationwide ban on public smoking could prevent as many as 154000 heart attacks a year . These findings are particularly important in light of mounting evidence that second- hand smoke exposure is nearly as harmful to heart as chronic active smoking. Finally, at last one reason why smoking should be banned is that it has got several health effects. It harms almost every organ of the body.