I can't recall the google settings screen but you can review everything that google has picked up. I reviewed mine and while most were ok there were a good numb

I can't recall the google settings screen but you can review everything that google has picked up. I reviewed mine and while most were ok there were a good number of private conversations with my wife that google had randomly picked up. Most of them sounded like stuff I was saying while driving. Which means that it was purely based on what android thought it had heard vs any manual input. I can only assume google home will have similar moments.