Need doctor's help! will inhaling toxic fumes cause pleurisy?

Yes/no: Depends on the fumes. Lungs have no pain fibers. Most things inhaled may cause chemical burns to the large airways and cuase burning sensation. Pleurisy is the cover of the lungs and have pain fibers. If they are inflammation then yes=pain. I would avoid fumes if possible and use a respirator if needed. Fumes can also cause significant lung issues acute and chronic.