lpg help please anyone

My van just popped whilst on petrol but smells of gas and my exhaust broke please help its been great up until now.

Check the air cleaner box, I have had a backfire that blows the air cleaner box open, the smell can come from inside of the box,

Thank you but where's this box situated new to this just so I can tell my boyfriend.

Under the drivers seat

Thanks will have a look might need an exhaust as well now back bit broke

Is it the tail pipe that has broke away from the silencer? A few of us on here have just welded them back on. Mines still going strong 3 months later

It's the back bit nearest the back so maybe it's really rusty but my partner said he can probably fix it and weld it.he hasn't worked on one of these before but he's gonna check the LPG tank for any leaks but am sure it was smelling of gas due tk the exhaust nobody in dundee really deals with LPG and garages are asking what kind of system it is but I've not got a clue drives great aswell no overheating or nothing needs a service but will have tk check and see what kind of plugs and filters I need and where to buy