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.
Problems with the Heater Core. There are several issues that may cause car smells from the heater core. If you notice your heater is producing an antifreeze burning smell then there is a good chance that antifreeze is leaking into the heating system. A leak can occur from a hose to the heater core or the heater can be cracked.