" Quite Simply, I would say: "I would like to remove that tick that is been biting me all day." I would not say: "I have to be free from that tick." And that's why I'd personally use "rid of" with a cold, rather than "free" (it does not matter https://energyscotlandgrants.mystrikingly.com/blog/empower-your-home-s-efficiency-explore-the-eco4-grant-revolution