Use smell, see, paint and measure methods to install gas alarm to prevent gas leakage

Gas leakage in open fire, it is very likely to explode, resulting in a great threat to life, the correct approach has four steps "smell, see, paint, test".
smell
Domestic gas is deodorized before entering residents´ homes, so that the gas has a smell similar to rotten eggs, which is easy to be found leaking. Once you notice a similar smell in your home, it could be a gas leak, so check it out.
see
In the case of no gas at all, check whether the number in the red box at the end of the gas meter is moving. If it moves, it can be judged that there is leakage behind the gas meter valve (such as the hose and interface between the gas meter, the stove and the water heater).
tu
Mix soap or washing powder into soap liquid, and smear it in turn on the gas pipe, gas meter hose, cock switch and other places where air is easy to leak. Soap liquid in the event of gas leakage, the gas will be blown out of the foam. However, for very small leakage points may not be observed, to the professional detection tool detection results prevail.
measuring
Use professional gas alarm instruments (such as household gas leak alarm) leak detection, must buy qualified products from the regular way.