I smell gas

when my 2003 S80 is off and parked, I smell gas and it is coming from under the car but there are no puddles. I have checked the engine but there is no fuel spray either. I can really smell it when I have the windows down and it seems to initiate from the back. The trunk smells bad too. Also when I turn on the AC, there is a bad smell too but not sure that it is fuel.
It is taking longer to start the car now too. Like 3 or 4seconds.
Do I have a bad hose? Someone said it could be the gas seals??
I change oil regularly and just has a state inspection and it passed.