I'm not sure where the equivocation comes into play. You can fully disregard the "There's absolutely nothing positive about smoking (including the smoker's ple

I'm not sure where the equivocation comes into play. You can fully disregard the "There's absolutely nothing positive about smoking (including the smoker's pleasure)" and replace it with "There's absolutely nothing positive about smoking (not including the smoker's pleasure)" If the statements were intended to stand side by side, that would be an equivocation. But they are not meant to stand side by side, nor would it make much sense to do so.