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.
LEAKS AND THE SMELL OF GAS Always be sensitive to the slightest gas smell. Learn to recognize the odor of propane gas. To become familiar with the smell of propane, call your propane dealer for a Scratch-And-Sniff brochure, and ask to smell the propane when your propane dealer fills your tank.