Is there a type of insect that enters your sinus area via ears and nose and burrows there? they can sometimes perforate your sinus too.

Insect in sinus area: I am sorry to hear that you swallowed a 'stink bug' 4-5 weeks ago and that now you feel as though it is still inside your nose moving around. I have taken many foreign bodies out of ears, noses, and airways, but never a stink bug. I am happy to give you some of my initial thoughts, but ultimately I am going to recommend that you make an appointment with an ENT or Ear Nose Throat physician to get evaluated. They will be able to take more of a history, examine you, and perform a flexible nasolaryngoscopy. This is an in office procedure where they pass a small fiberoptic scope through your nose to evaluate your nasal cavities, nasopharynx, pharynx, hypopharynx, and larynx (voice box). These are all of the cavities from nose to your voice box. If there is a foreign body present (such as a bug), they will be able to see it. I don't want to discredit your thoughts and feelings, but I doubt that there is a bug present in your nose anymore. I don't doubt that there may have been initially, but it is highly unlikely that it would have stayed in there for 4-5 weeks. It is more likely that you had a bug fly in there initially, and it irritated the mucosa (lining within your nose), and then even after the bug is gone, the lining may be continually irritated. Nonetheless the ENT will be able to examine you and tell you for sure if there is any foreign body present. Best of luck.