that is ot how you test for a cooling fan problem and you should take it to your mechanic so you dont chop off any fingers. Those fans are on a special switch that comes on when the engine reaches a specific temprature. Paul, 38 years ago there was only one fan. Now, a lot of cars actually have two fans.
2) Propane contains an odorant similar to what's put into natural gas. If combustion is not complete, or there are any leaks, then this odorant produces a smell. In addition, in larger tanks typically there is a large tablet of solid odorant sitting in the bottom of the tank.
This link will take you to Propane 101, an informative site about propane safety. If You Smell Gas. Never assume a gas odor is a sign your tank is running low. If you smell gas in the house, or if you have a gas alarm that signals the presence of gas, IMMEDIATELY follow these suggestions: No Flames or Sparks. Immediately put out all smoking materials and other open flames.