Ad nauseum seems to do the job well. Ads are clicked and not displayed. So YouTube is happy I guess.
Now, isn't it dangerous running ads and clicking on them from a security point of view? Can these ads exploit some vulnerability and pwn your computer? I would prefer never to run ads and not risk some infection.
https://github.com/dhowe/AdNauseam/wiki/FAQ#how-does-adnause...