I smell gas only faintly, and only sometimes. Is that still an emergency?
Treat any gas odor as real until proven otherwise. Intermittent faint odors are classic early-stage leaks — a fitting that weeps when the line pressure or temperature changes. Call SoCalGas's 24-hour line to have it checked — SoCalGas says it will send an employee to investigate any leak indications — and if a leak is confirmed, have the line repaired by a licensed plumber.