" To Paraphrase, I'd personally say: "I want to get rid of that tick which is been biting me all day long." I would not say: "I have to be free from that tick." And that's why I might use "rid of" with a cold, rather then "free" (no matter https://www.reddit.com/r/Greenhomesgrant/comments/1lf1gqg/make_your_home_energyefficient_with_smart/