Well, you might have tweaked the lines enough to leak some fuel, but not enough to cause a permanent leak, so my guess is it might take awhile for the fuel smell to go away completely. If you can't see the leak, I'd just keep an eye on it.
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98 Riviera SC3800 All stock except gutted air box.
1970 Buick GS455 Stage1, TSP built 470BBB, 602HP/589TQ
Best MPH, 116.06 MPH, Best ET, 11.54
https://www.youtube.com/watch?v=UHCda-t_Jls
https://www.youtube.com/watch?v=sfT2tEO4XcU