Fumigate is a process of purifying an area by using chemicals or other agents to remove pests or contaminants. The term can be broken down into two crossword solutions: PURIFY (6 letters) and REEK (4 letters). PURIFY means to make something clean or pure, while REEK means to emit an unpleasant odor. Fumigate is the combination of these two words, meaning to PURIFY an area by using chemicals or other agents that emit an unpleasant odor.