[Flick]

Guys once this summer we pulled over because we thought we smelled propane. I used a propane detector and could not find anything. The smell ceased. I have had a gas detector alarm in the coach the last couple of years and it's never gone off. Which brings me to today. 

The coach was winterized a week ago. I pulled it out of the barn today and drive it to my house to empty it of things for the winter. As I worked in some of the bays I kept getting a slight smell of propane. I checked and the main valve was closed. It has been closed for several weeks. We could smell it inside the coach a little as well. The tank is about half full. 

Any ideas of how it could be creating a smell if it's shut off?  I read online there is a pressure release valve. However, it seems that this only activates if the tank is overfilled. My tank is only half full so I assume it should not be venting right???

I think I will take it to the RV place here in town and have them hunt this smell down. Maybe do a pressure check to see if there is a leak. Any other ideas or suggestions guys?  A gas leak scares the heck out of me.