Wouldnt have thought so since it is quite difficult to come into direct contact with the stuff. (unless you are eating the printout or squirting the refils up yer nose :D )

More likely is, if you are handling a lot of copier paper the fine chalk coating (used to stop the sheets from sticking together) together with the mould spores that stick to it is transferring to your hands and thence to the nasal passages.