Sometimes installing new tube of Gas incorrectly would be causing the dangerous gas leaks which can cause fire. Instead of using your nose and sniffing around the area, you can use gadget similar to this LED gas detector to get the accurate measurement.
The LED Gas Detector is a simple device actually. The device’s LED indicator and alarm will be activated when it has detected a sum of flammable level of gas. It will light up in two condition where Green means safe while Red means Dangerous.
It’s a simple device that will cost you $29.98 to own one, and it requires two AA battery to sniffs the gases around.