There are people around me who buy phones with AI integrated software, to which they give verbal commands to do actions on their phone. The issue is that their microphone is always on, and they pick everything talked around the phone.

This feels invasive as hell, and it's awkward to tell people to disable these functions, including the fact that they are not tech oriented in the first place. But, even if they disabled it, there is no guarantee that it still isn't using the microphone in some capacity.

Are there any viable methods to mask my voice without actually putting a mask on? I mean more like an app or a device (that is not harmful to the body and/or ears).