I am a live aboard and have been since March of 2007. While I am no authority, I think if you smell propane there could be a problem. They put in the smell for a reason. I talked with a person that was in our marina in Delaware recently that was a boat recovery person. He was headed to Norfolk (in mid-August) to work on an Endeavor 42 that exploded as the propane leaked into the boat and was ignited. The owner was badly burned. The next day I verified my outboard tanks worked properly, my shut-off solenoid worked and the tank compartment drain was not clogged.
I would verify all is ok.
Good luck does not happen by accident!
S/V Love and Luck (It's a Buffet song)