Afflatus is from Latin afflatus, past participle of afflare, "to blow at or breathe on," from ad-, "at" + flare, "to puff, to blow." Other words with the same root include deflate (de-, "out of" + flare); inflate (in-, "into" + flare); soufflé, the "puffed up" dish (from French souffler, "to puff," from Latin sufflare, "to blow from below," hence "to blow up, to puff up," from sub-, "below" + flare); and flatulent.