Info 24: Gas Leak Outside Your Home

What you should do, if you smell gas outside your home:
Call your nearest Gas Malaysia office or call our 24 hours emergency toll-free number at 1-800-88-9119. Keep everyone away from the area where the odour is strongest and stop traffic. Clear a distance of at least 30m (100 feet) from the affected areas. What you should not do, if you smell gas outside your house Do not light any flames No smoking Do not turn on/off electrical switches Stop from operating motor vehicles no open fires

source : here