Why when I take my oil cap off does it blow air out of it smelling of fuel?

[ROCKYBREM]

It runs perfectly fine no power loss mpg the same but it is blocking air smelling of fuel is this normal?

 

[Nath.]

I think you are smelling hot oil not fuel. Modern engine oils smell quite a lot.

 

[ROCKYBREM]

It deffo fuel

 

[M20FES]

It deffo fuel

Has the car had a remap ?

Do a oil and filter change and see if it comes back.