Gas smell only happens when the oven is on

Symptoms

• Faint gas smell noticeable only while baking
• Smell fades once the oven reaches temperature
• Stovetop burners don't produce the smell
• Smell may be stronger right when the oven cycles on

Likely causes

• CommonNormal brief gas smell during igniter warm-upA very faint, brief smell when the oven first ignites can be normal as gas is purged from the line.
• PossibleDoor gasket not sealing wellA worn seal can let a faint combustion smell escape into the kitchen.
• PossibleIgniter taking too long to lightA slow-to-light igniter releases gas for longer before ignition, increasing the smell.
• Less commonActual gas leak at the oven's valve or connectionLess common, but worth ruling out if the smell is more than brief and faint.

What to do

1. Note exactly when the smell happens: right at ignition, throughout baking, or only near the door.
2. If it's a brief whiff only at the start of preheating that quickly disappears, this can be normal, but keep monitoring it.
3. Check the door gasket for gaps or wear as described in the door-seal guide, since a bad seal can let combustion odor escape.
4. Time the igniter as described for a slow-heating oven; a long ignition delay releases more unburned gas.
5. If the smell is more than faint and brief, or gets stronger, turn off the oven and ventilate the kitchen.
6. If you're ever unsure whether a smell is a real leak, treat it as one: leave the house and call your gas utility from outside.

When to call a pro

If the smell persists, grows stronger, or you're unsure, call your gas utility or a licensed technician rather than continuing to use the oven.

Safety