Ken, it would help a lot if you'd describe your whole fuel system, back to front and return, in as much detail as you can - connections, components, settings (regulator? carb floats), etc. If you've got a strong odor of raw gasoline for an extended period you've got a leak that's vaporizing fuel. Nothing wrong with the big pump and line, provided you're talking big flow volume with a capable pressure regulator, and not high pressure unless you're running fuel injection?

An open cup of gasoline sitting on the counter won't create the smell you're describing. It has to vaporize, like dripping into a big puddle or onto a hot/warm surface. You're looking for a leak, internal or external the way I see it.