In today s world, everyone seems to be busy in their own life that individuals rarely be sure of using resources effectively. We all know gas may be a useful component in environment. Some gases don't cause any harm if emitted in excess amount but some do. Gas like LPG is employed household purpose for cooking food. Not only in household purpose but also in hotels, restaurants, hospitals, etc. where there's human interaction. Also, we will see CNG operated vehicles. If there's any amount of leakage of those type gases it can cause an enormous loss to life and property.When LPG and CNG are burnt or mixed to the atmosphere, it leaves alkanes, alkenes and other hydrocarbon in the atmosphere. Which further causes difficulties in breathing, violent coughing of human beings. So, what if we get how to scale back or abandon the possibilities of this loss. In this paper a method of LPG sensing has been focus to save the life of household during the leakage of gas like LPG.