" To paraphrase, I'd say: "I would like to get rid of that tick which is been biting me all day." I would not say: "I need to be free from that tick." And that is why I might use "rid of" with a cold, rather than "free" (regardless of https://freeinsulationgrant.school.blog/2024/08/21/top-qualities-of-top-agencies-while-applying-for-loft-insulation-grant-for-pensioners/