Is it normal to briefly smell gas when the burner first ignites?

Why the whiff happens at all

When you flip the switch, the valve opens a beat before flame walks across every burner port. In that beat, a trace of unburned gas can drift out of the firebox — especially on open-front vented log sets, which share air freely with the room. If the smell is gone before you've finished sitting down, the system is doing what it was designed to do. Sealed direct-vent units should give you even less; their combustion air never mixes with room air at all.

Delayed ignition is the one to respect

Trouble starts when gas keeps flowing but ignition keeps waiting. Clogged burner ports are the classic cause — in WNC the off-season culprit is almost always spiders and dust packing the pilot assembly and orifices over the summer. Logs nudged out of position, a weak or dirty pilot flame, or the wrong orifices on a propane conversion do the same thing. The gas pools, then the whole cloud lights at once: that's the pop or boom, and the puff of unburned gas you smell right after.

A light that routinely arrives with a thump — or one hard enough to flex the glass — is a stop-using-it-and-call situation, not a quirk to live with.

Whatever you do, don't keep cycling it

If the burner doesn't light promptly, resist the urge to flip it off and on repeatedly — every failed attempt loads the firebox with more gas, making the eventual ignition harsher. Turn it off, let it air out, and call (828) 545-0525. This is exactly the failure an annual tune-up in late summer or early fall is built to prevent: we clean the ports and pilot before you're depending on the fireplace, and most ignition repairs are inexpensive parts and a single visit.