Definitely you should try to block all the microphones you can, besides getting rid of any smart assistant, block your smart devices microphones when not in use.
If you have a headphone jack (Android devices, iPads and SmartTVs) you can buy very cheap options to block the microphone, like this one Microphone blocker
If you have lightning port (iPhone’s from version 7 and above) we rely on the products from https://mic-lock.com