<s>[INST] I had hernia and intestinal blockage surgery on October 28, 2013 due to a previous gastric bypass surgery that I had i 2007. I am now experiencing pain in the belly button area and a foul smell when I urinate. Can this be the due to an infection due to this surgery? I am a little worried about staph. [/INST] Hi. Foul smell while urinating may not be directly related to the previous surgeries. Yes this can be a chronic infection and should be investigated thoroughly by ultrasonography, urine test for routine, microscopy and culture and sensitivity. A course of 3 weeks of antibiotics according to culture report (if positive) or according to the experience of operating surgeon would solve your problem. Take plenty of oral fluids. </s>