Passive smoking is also known as second hand smoking, means you don’t smoke, but you get the bad effects of smoking, because somebody near to you is smoking, or somebody dear to you is smoking in very closeby range. Now because the tobacco smoke when it is released into the air has a lot of particles , it doesn’t tend to rise and disappear, it tends to hang in mid air, which means our breathing air will have lot of particles. Children especially when exposed to passive smoking are more prone for