Apparently August and September are the worst months for them, due to being the fruit harvest season and it being their peak activity period. Supposedly Corfiot wasps are not as aggressive as our wasps, not that I would want to find out.
The trick is the smell of burnt greek coffee, sunscreens and aftershave will attract them. Try and just don't tell anyone, and you can say they don't bother me for some reason.
AI Overview
Yes, placing a small amount of ground Greek coffee in a saucer or on a piece of foil and burning it is a traditional, effective method used in Corfu and other parts of Greece to repel wasps. The smoke from the smoldering coffee grounds is a potent deterrent that wasps dislike, though it is important to use fresh, finely ground coffee for the best results.