Apple doesn’t allow you to use ANC on AirPods when you have only one ear inserted. But there’s actually a setting — buried deep inside the Accessibility preferences — that enables this feature. Why wouldn’t they make this the default? Who would want ANC to work only some of the time? And what does this setting have to do with accessibility/disability?
unless you were deaf in the other ear, why would you want to use ANC in one ear only?
I realize that we think nothing bad happens from the emissions from AirPods, but this may change in the future. Some have pointed out that prior studies involved devices that were not stuck quite so far into our ears.
Since I listen to podcasts and books, I have no need to use two simultaneously.