Fumigate rhymes with:
abrogate, castigate, congregate, corrugate, delegate, desegregate, instigate, interrogate, investigate, irrigate, koreagate, mitigate, navigate, obligate, propagate, relegate, segregate, subjugate
Fumigate sounds like:
famished, fancied, fanciest, feminist, fenced, financed, finessed, finest, finished, finstad, fungicide, funnest, funniest