I went to a proctologist and he told me i have nothing wrong. yet i smell like feces. do your but muscles control when you poop or is it sometimg els?

Maybe not GI problem: Occasional incontinence of stool with fecal leakage is common, but loss of bowel control particularly without warning may signal a significant infection, inflammatory problem, maldigestive concern, or neurologic disorder. Sometimes, particularly in youths, the condition is behavioral. However, you describe an altered body odor similar to stool--have you checked with dermatology, neurology, etc.