I've got an ongoing problem with the smell of gas. It's one of those things
where you walk up to the van  and smell it but then after that you can walk
around the the van and not smell where it’s coming from. The van is
currently in my  garage while the rust treatment cures and the garage smells
like gas now.  A little history, this smell started about a year ago.  Every
single gas line in the van has been replaced and even the gas tank was
replaced last summer.  I had the smell before and I still have it.  This is
driving me nuts. I've been over the  whole van with a flashlight, there is
no visible sign of a leak.  The smell is worse the hotter it is. It does not
matter if the tank is full or near empty.

Any thoughts on finding this?

Thanks,
Bryan