Some people get so comfortable with a mask, that it's more trouble temporarily removing it, than to just keep wearing it for the whole trip, even when outdoors

Some people get so comfortable with a mask, that it's more trouble temporarily removing it, than to just keep wearing it for the whole trip, even when outdoors or in their car. A respirator mask also filters out pollen, and particulate pollution and fine dust from traffic. Some people used these even before pandemic, when outside in polluted areas. And if you really hate the feeling of insects flying in your mouth when bicycling, a mask prevents that, too.