The ad triggered the devices to read out information about the burgers from online encyclopaedia Wikipedia.
However, somebody edited Wikipedia to describe the Whopper as the "worst hamburger product" and another added cyanide to the list of ingredients.
The BBC understands the ad was blocked.
Google did not publicly confirm this, saying only that it had "no involvement" in the campaign.
But Burger King confirmed to the BBC that after the first iteration of the ad was blocked, it ran a tweaked version on US TV.