2000 Oldsmobile Alero it also has smoke coming from a steel

Shakes or Wobbles problem
2000 Oldsmobile Alero 6 cyl Front Wheel Drive Automatic

this metal hose is close to the back of the engine, I checked the 3 front spark plugs and showed white creamish inside the plug itself. There is also a gassy smell in the engine oil resevior. And I noticwe that it burns or disappears antifreeze. Please I need some help to determine this problem. Oh yes and we did the diagnostics test on it and said cylinder 1 misfire, but my mom did this test and didnt know how to use the machine, and she accidently erased the info on the car computer.