1997 Rover 4 Series

Hi my rover 400 is a 1.4l. It has a lot of oil over the engine as if there is a leak and it smells really oily too when i drive it even on short distances the engine smokes from under the bonnet( i am not driving it anymore). Also before i noticed these faults the blwer on the inside of the car was nt getting warm just blowing out cold air no matter on the length of the journey. I have been told by a friend that they think all these problems lead to head gasket failure I am not sure though if it all is the 1 thing
thanx suzanne