Oil Leaking Around Prop On Johnson Motor I Have Oil Leaking From Around My Prop On A 1975 70hp Johnson Outboard?

I have oil leaking from around my prop on a 1975 70hp Johnson outboard? - oil leaking around prop on johnson motor

I have the engine running at home, and I noticed that the water in the exhaust odor of petroleum and natural gas. I live in the back of the black oil residue had to prop them. So I removed my bra and saw what looked like milky oil (eg, blown head gasket on a vehicle) into the slot. I have no idea what was going on was outboard of the fine, despite smoking like a freight train. Ideas?