why do i smell gas inside and outside of the car?

It's hard to guess at what the cause of fuel smell is without being able to experience the smell first hand or look for leaks or stains as a result of the leak. Fuel leaks are always a risk of fire so it's safest to get it checked out as soon as possible. It could be leaking injectors, leaking fuel rail or fuel pressure regulator, it's impossible to just guess.