Mucormycosis is called as black fungus, which is caused by fungus belonged to Mucorales. If this fungus, effects healthy individuals it won't cause any serious complications, but it may cause life-threatening issues when Mucorales affects individuals who have low immunity. The mortality rate of black fungus is more than 50%, and it may also range till 100% if the individual is having any preexisting or chronic disease. This was the case of a 55-year-old male patient complaint of having generalized pain in the maxillary teeth bilaterally and suffering fullness in the maxillary sinus. To check on other possible diseases, doctors have conducted other diagnosis tests, and orthopantomogram revealed in the diagnosis that there was the presence of haziness in the left maxillary sinus, which looked like an incompletely formed soap bubble and additionally he diagnosed with coronavirus disease positive. Then, doctors suggested a chest computerized tomography (CT) along with head CT excluding the brain and further investigation of this case was given below in detail. The report reveals acute necrotizing suppurative sinusitis with dead bony tissue, soft-tissue necrosis with fungal infestation showing broad hyphae with right-angle branching suggestive of mucormycosis.