This on on my wife’s car.

2010 Corolla, 1.8, 108k on the clock.

There’s a smell of gas when the car has been idling. When driving, you do not smell anything out of the ordinary.

Gas cap is good, and is not the source of the problem

The car is not throwing any codes.

Roughly around the same time the gas smell started, I changed the plugs. The only thing I can think of right now is that maybe one of the coil packs got damaged when I did the plugs. But there’s no miss or hesitation that a damaged coil pack would indicate.

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Maybe the Evap canister?

Not sure what else it could be. Maybe I should just buy this and go hunting in the engine bay?