Devices have ears

Our TV at Williamstown often picks up words in our conversation trying to act on what it thinks is a command.  We have been talking about Ibuprofen lately as something to take for some back pain inflammation. We mentioned it a lot as we rummaged to see if there was any at Williamstown. It is a unique word easily recognised and now I am seeing it as ads when I log on. There is also a video being advertised when I go onto Youtube.  We did not type it anywhere it was only mentioned in audible conversation.  There are many devices with microphones that can hear better now. There is a chatGPT wearable pin that can see and hear and works on voice but can also project onto your hand for other commands.  Be careful what you say.