abrahamjx6

okay so when i bought my car, the smell was never there.
2 or 3 weeks later the smell started to kick in.
and its usually on the left rear tier only.
there is no smell coming from under the hood,
or back seats where the tanks are,
the smells comes from the tier,
and also the smell sometimes occurs inside the car when i have it in inside recirculation.
i have no idea what this could be.?
maybe gas line cracked? or holes that lets the vapors out?
anyone have any ideas or things to check to get closer to the source of the smell?
thanks in advance!