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.
What can cause excessive odor with a propane heater? Excessive odor can be caused by any condition that disrupts the factory specifications regarding A. Air flow or B. Fuel flow. A disruption in either will create a condition that is not allowing complete combustion of the fuel that is being delivered. Things to check: