Yes, but in my work environment with exhaust fans that do many room changes of air an hour, there really isn't a reason for me to wear it as I stay well below the allowed limits. I am just a trace user of the chemical in my field of work.
Now, if I was working in a chemical factory, where it would be at high concentrations in the air, I probably would wear one.
I don't know the facts of respirators other than what i have been told at OSHA presentations by consultants. I was just telling what was told to me.