: No respirator takes out every particle, thus the smell. Assuming you're
: changing the cartriges if the respirator is maintained it should last a
: long time.

: There are dust filters that lay on top of the cartriges that'll extend the
: cartriges life considerably. The filters are cheap, the cartriges arn't.

: Bill H.

In my experience, all epoxy resins have a smell when cut or sanded, no matter what age they are. I use the IOSafety half mask respirator and the "everything chemical" type of cartridge. Unless the cartridges are brand new I always have a little bit of scent that comes through.
FrankP