I had an abscess on right cheek , just above the mandible in November  2018. To which Incision & Drainage was done and was followed with Linezoild antibiotic after the procedure.. but now since 2021 January , there is very little amount of seropurulent foul smelling fluid is coming out of it by squeezing it , there may be a blind sinus formation. I had taken cefixime , linezolid , applying clindamycin locally but the fluid is still coming out on Squeezing though very very less amount , its not healing completely. No induration , no swelling is there. What should be done . No dental involvement is therefore as examined by dentist.