By linking your Home device to your Google account, you have the ability to enable a few parental controls that should prevent most kids from accidental access to inappropriate voice-activated content. As a default, Home bleeps out most comment swear words.
In order to limit explicit music and video content from YouTube (that you might play through YouTube on a smart TV), Google Play Music, and other music/radio services from playing on Home and linked devices, follow this link:
Google: Control Restricted Content Help Page
Related Post: Smart TV Basics from Protect Young Eyes
Learn how to play YouTube videos on TVs using Google Home by visiting this Google support page: