TBF the odds are that there is a passive microphone/camera in some device, somewhere in your vicinity much of the time, just waiting to be left on or hacked by some nefarious individual/organisation for their diabolical purposes…
Got a smart phone?
That thing’s going to be way more use to anyone trying to gather intelligence on you: camera, microphone, access to SMS, emails, and internet usage information, plus GPS to track your movements?
I’d be far more worried about that little bit of personal technology that the big rectangle in the lounge which half the population sit drooling in front of corrie…
Tinfoil hat anyone?