Gas stove with a gas leak or smell causes

Gas stove with a gas leak or smell causes:
a, hose rupture or connected, replace the hose and fixed;
b, Gas cooker valve seal aging joints, replace the seals;
c, Gas burner valves prolonged failure, replace the valve;
d, stove unlit, troubleshooting, re-ignition;
e, from the fire or from the flame, remove from the fire (according to previous solutions);
f, joint leakage, repair or replace the joint.