When I get out of my car I can smell gas. Is that bad?

Unless you just refilled your fuel tank and there is residual fuel vapor or you have left your gas cap off, then yes, it is a bad thing.  First you want to look under the vehicle to see if there is anything leaking.  If you see something leaking have it towed, DO NOT DRIVE IT! If nothing is leaking you'll want to determine where you smell the fuel the most.  If you smell it more towards the back it could be unburned fuel from the exhaust or a leak in the fuel tank or filler neck/hoses or it could be the vapor recovery system leaking commonly known as the EVAP.  If you smell it more towards the front it could be part of the fuel injection system leaking.  The smell of fuel is defiantly something you should have checked out.