I have cancer am i more likely to get pulmonary aspergillosis?

That depends...: Aspergillus infections are opportunistic. That is, they usually occur in persons with severely compromised bone marrow function (such as just after intense chemotherapy), or among those taking potent immunosuppressive drugs (after a transplant for example). Most organ cancer patients do not get aspergillus, but it does occur more often in persons with "blood cancer" (leukemia for example).

Aspergilla: Populates bullae or big holes in the lung, and its symptoms are either allergy to it or hemoptysis due to invasion. Most are not symptomatic but show up on imaging. You are not moe susceptible with cancer, but those on steroids like Prednisone may be.