I have this weird problem. Here's exactly what happens.
My car is not apparently leaking gas; I don't smell gas as I approach it. I open the door to the pleasant smell of the, uh, whatever the previous owner used when he cleaned up the car to sell it to me a few weeks ago. Maybe leather conditioner, I'm not sure. Anyway, so I get in the driver's seat and close the door. The windows are closed, sunroof is closed, trunk is closed, back seats are up. I put the key in the ignition and start the car. Suddenly the whole inside of the car is filled with the strong smell of gas. The air kicks in, and within a minute the gas smell has been replaced by clean-smelling air. The car drives as it has been the past few weeks. Before purchase, the car passed a pre-sales inspection with only a slowly leaking front strut.
So given that complete description of my problem, what could be causing this smell? I am pretty short on money right now so I'm basically looking to see, is there something I can easily check myself? (I am not very car-savvy but can follow pictures and instructions; I don't have any ramps or lifts but could look into getting some if I need to get under the car) How worried should I be about this? I don't think it was doing this a week or two ago. Is this something that I can get checked out for free? There is no CEL but maybe I should induce one and go get the free code pull from the dealership?
Also, I had a bit of "engine stumble" a few days ago which I described here, so could that be related? Unfortunately I don't know exactly when I started noticing this gas smell, I wish I did.