A rotten-egg smell near an appliance, a pilot light that will not stay lit, or a stove burner flame that looks yellow instead of blue can point to a loose fitting, a corroded line, or a partially closed shutoff valve feeding a range, dryer, water heater, furnace, or outdoor grill.
If you smell gas, leave the building immediately, do not flip any light switches or use a phone inside, and call your gas utility from outside before doing anything else.
Once the utility confirms it is safe to be near the property, call for a line inspection, extension, or repair rather than relighting anything yourself. Smart Pro Plumbers connects Bell Gardens, CA homes and businesses with a plumber who repairs, extends, and pressure-tests gas lines for ranges, dryers, water heaters, and furnaces. The referral line is (844) 898-0295.