For what it's worth, in two years our Google Home has only 'misfired' once, and that was when someone on TV said 'Hey Google'. It is in the living room and sees heavy use by a family of five.
> our Google Home has only 'misfired' once ... when someone on TV said 'Hey Google'
Is that a misfire? It reacted to the trigger phrase. Have you trained it to only react to your voice (I know that's an option for Google assistant, but I didn't do it for mine).
Amazon added a real-time sanity check, so if too many Echo devices are triggered with similar sounds within a few hundred milliseconds, it will ignore them. This was after some TV ads or shows had intentionally abused it.
