Th Aardvark is right some filaments cause much less irritation, We have a small print farm (of 15 printers) in a portacabin, since changing to ColorFabb Economy PL (which we did a long time ago!), we no longer have problems with respiratory irritation.

(We also have many fewer blocked nozzles with the ColorFabb Economy PL - in our use it's at least 4 times better than e-sun, and about 20 times better than some other makes).