Gas smell when using heat - 2007 Ford Escape

When I turn on the heat, I smell gas. This is only when the vehicle is at a standstill. When moving, I don’t smell it. What could this be?

I don’t know what it is but it is not something solved on the web. Get this to a mechanic before you have a fire.

Don’t light up that cigar while you drive.

Yosemite

Have someone check the fuel injectors for leakage.

If one of the O-rings is leaking on an injector, the fuel pressure will force gasoline out as a mist.

Tester