smell of gas changed gas cap replaced hose leading to charcoal canister help

I want to take this time to thank you for any and all assistance you have been able render in my hour of need . . . THANK YOU! TODAY REMOVED REAR SEAT. TOOK COVER OF CHECK FUEL PUMP ON TOP OF FUEL TANK. FOUND IT VERY WET ON TOP OF FUEL TANK. LOOKED LIKE SOMEONE TRIED TO FIX A CRACKED PLASTIC COVER WITH NO SUCCESS. REPLACED UNIT $105. THANK YOU!