Strange fuel smell

[andyjbee]

I'm getting a strange fuel like smell coming through to cab area, it's not a pure petrol like smell but more like aviation fuel type smell (if you know the smell) "say smell one more time" I dare you. Anyway if anyone has any pointers I'd be most grateful.

[DBXdarkangel]

Does it smell when your AC is turned on when it's off. When was last time you changed the cabin filter?

[GVK]

Exhaust blowing at turbo-downpipe?

[The Red Warrior]

Possibly a leak in the PCV system? I’ve have a friend who has a similar problem but he’s not found the source yet

[pudding]

Exhaust blowing at turbo-downpipe?

That was going to be my suggestion, or a perished/split carbon can rubber hose, but I've never smelled the very distinctive whiff of Eau De Gatwick coming from a car before though.  Burned aviation fuel is a very unique smell.  Definitely not a burned petrol smell!  Rich running blasting through a cat can give off a particular odour (not the eggy stink) but its nothing like a Rolls Royce Trent!