" To put it differently, I would say: "I need to get rid of that tick which is been biting me all day." I wouldn't say: "I should be free from that tick." And that is why I'd personally use "rid of" with a cold, rather then "free" (it does https://grantforhomeinsulation.blogspot.com/2024/09/why-should-you-apply-for-free-boiler.html