If our eyes could see microwaves frequencies the same way we can see visible light frequencies, then all cellphone towers would be lights brighter than the sun, all around us. That is to say, we've all been walking around in an ocean of electromagnetic frequencies for many decades.
To the extent anyone is concerned, don't worry about it because (short of escaping to live a nomadic life in Siberia or Mongolia) there is nothing you can do about it anyway. If we one day discovery that it's for some reason harmful, then ¯\_(ツ)_/¯ we're all fcuked equally.