The smell of rotten eggs is never something you want to have in your home. The reason for this smell in your RV can be caused by several different things. Rotten eggs are one of these, and you should always check your fridge before getting worked up about any weird smells.
It is unlikely that you let eggs sit out long enough to rot, so rotten eggs are probably not a problem. Both of the other possible culprits don’t have anything to do with eggs, but either of them is worth investigating.
POTENTIAL CULPRIT #1
It is possible to use propane as a fuel. Gas leaks are quickly and easily detected by adding a stinky smell (similar to the smell of rotten eggs or skunk spray) to propane, which doesn’t have its own smell. Your rig needs to be aired out right away if it smells like propane.
When the rig has been evacuated, it needs to be determined what is causing the propane smell. The RV may have a leak, which needs to be fixed immediately before it can be used again. Also, check that your propane cylinders have a full fill level, since it could be a simple problem of low propane.
POTENTIAL CULPRIT #2
Your water heater is another possibility. You may have this problem if the only smell you detect is that of rotten eggs when running the water. Anaerobic bacteria living in some water and reacting strangely with the sacrificial anode rods in RV water heaters cause the smell. While it won’t harm you, it certainly does not smell pleasant. Your anode rod should be made from aluminum and zinc to fix the problem. Clean the system thoroughly with water and hydrogen peroxide, and replace the anode rod.