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.
If you smell gas near an appliance , it may be just a pilot light that has gone out or a burner valve that is open slightly. If you find this problem and can fix it, the problem may be solved. If you smell gas inside: Go to a phone that is not near the smell and call your propane company right away. (If the smell is strong or you are unsure, leave the building and then call.) They will come and make the area safe at no charge to you. While waiting for the propane company field service representative: