@Carlos G Thanks for the reply!
Yes, this is my first twin carb'd air-cooled engine. I'll check again around the carbs and fuel lines by the engine.
It's not so much that I can't stand the smell, it's the spouse and children! I do wish I had a detached garage then I wouldn't have to be 'alarmed' all the time by these sweet voices
Let's see how long they can stand it, otherwise i'll need a car cover to leave it outside