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.
I have an exterior vented propane fireplace in a new home my wife and I bought. It sucks. It puts out a dinky little flame and within minutes the whole house smells like propane and I have to open the windows to air it out. I just had the tank filled (100 gallon propane tank) last May and I have only run the fireplace a total of ten minutes.