Yes, take it seriously. A raw fuel smell usually means gas is escaping from somewhere: a rusted or cracked fuel line, a leaking injector seal, a loose filter fitting or a damaged filler neck. Fuel near a hot engine or exhaust is a fire risk, and the fumes aren't something you want to breathe in the cabin. A faint smell right after filling up can be normal, but a strong or steady smell while parked or driving is not.
If you smell gas, park the car outside, away from heat and sparks, and don't let it idle in a garage. Look underneath for drips or a wet spot, but don't try to start it if fuel is pooling. Call your nearest C&C shop, and if the leak is bad, the shop can send a tow, or reach our after-hours driver at 706-945-3370. We find the leak, repair the line or seal, and pressure test the system before you drive it home.