Mileage and transmission type would help some.

In rank order:

a) Fuel Pump Relay: Do you hear the 2-second hum of the pump cycling
when the key is first turned?
b) Clogged fuel filter: When is the last time it was changed?
c) Other Possibility: when is the last time the plugs and wires were
checked/changed? Are you getting a spark?

Questions:

Did you get _any_  ignition at all? Or did it simply crank with
nothing happening other than the cranking?

Where do you smell the gas? At the tailpipe or the engine?

Is there any gas dripping from anywhere?

Peter Wieck
Wyncote, PA