I cant stand the medical grade masks, but at work, we are required to wear an N95, the blue mask, or a black one just like the blue mask. Has to be 3 layer, held on with ear straps, no exhalation valve and approved before they'll allow it. They are hot, fog my safety glasses, rub my ears, and are just generally uncomfortable.
"I can't breath". And I have COPD and exercise induced asthma. I make sure I wear a cloth mask the has gaps at the nose to allow an airflow. Sorry to all the mask nazis out there...