I have a chevy 350 my oil smells like gasoline what causes that and whatever causes that can that make blue smoke come out of my exhaust?

Update: I have a holley 750 double pumper on the 350 but it is worn out and the gas fumes from my exhaust will burn your eyes
Update 2: I also poured a lot of gas down the carburetor to get the truck to run and try to tune the carb so it will stay running
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