EPC Light and smell of gas

I was driving on the freeway when my EPC light came on as
I was merging onto an exit. There was no noise or notice of
any loss of power as I was driving, but the smell of fuel was
within the vehicle. When I came to a stop as I was passing
through a merge I lost power and was unable to accelerate.
A few moths ago I had the fuel injection fixed and the
throttle body replaced, recently had the intake manifold
replaced. Could it be a sensor or something more? Looking
under the car, I couldn't see anything leaking more did I
smell gas under the hood.