fumigate
verb [ T ] uk/ˈfjuː.mɪ.ɡeɪt/ us/ˈfjuː.mə.ɡeɪt/
（用毒性气体）熏蒸，烟熏（以除害虫或消毒）
to use poisonous gas to remove harmful insects, bacteria, disease, etc. from somewhere or something
We had to fumigate the cellar to get rid of cockroaches. 我们不得不烟熏地下室来除蟑螂。