Lately the tree pollen has been really thick in the air. There's a fine yellow powder on every surface. When I breathe it in, especially when mowing the lawn, I start coughing and my throat feels like it's about to close up. So I am wearing a respirator, but it's not working.
It is fitting tightly against my forehead and temples and jawbone, but it feels like the pollen is still getting into my throat. It feels as though the pollen-filled air is entering the mask through the exhalation port, which is simply a flap. Is there supposed to be a filter placed into that circular area highlighted in the photo?
The filters are 3M P100 2097 filters.