Happen very easily on these cars, especially the higher mileage ones. If you are starting, especially from a cold start, the motor is in a cold start 'loop' where it gives the engine a rich mixture until the motor completely warms up. If you are starting and you are used to hearing: crank...crank.. fire (car starts) but accidentaly in a hury only did crank ... cra/ and it din't start before you let go of the key. now you have a whole bunch of unburned gas in the motor and it will just have to sit there until that gas evaporates. (hapens to racecars when tuning then, all the time)
STOP, WAIT, before you crank away again, turn the key to off and put you foot to the floor and lod it there, this will help the over abundance of fuel evaporate. Maybe a minute or two. if you have tryed to start your car lots of times in a row, since it did this, it will only get worse, and worse.
The best solution is to leave it sit.
PS; No you can';t flood you air filter!!! the fuel injectors are way to far down steam of the air filter! and besides, this is imposible until gas learns to fly: IE: the design of the intake manifold curvs down towards the intake port to the engine. Secondly, the whole works is capped off be the throttle anyways and I Hope you never ever, try to start a fuel injected car with the gas-pedal to the foor!!
Not trying to piss anyone off, just that's how it is.