Throughout this whole process, he was wearing our PD-100 respirator and never once experienced any symptoms. "I wore your mask from the second I got out of my truck until I got back in my truck at the end of each day just to be safe. I thought for sure the mask would be uncomfortable but I was prepared to wear it the whole time anyways. Needless to say, after the first hour or two, I didn't even notice it was there. Not once throughout the entire process did I experience the urge to cough or rub my eyes."