" Basically, I would say: "I need to get rid of that tick that's been biting me all day." I would not say: "I have to be free from that tick." And that's why I would use "rid of" with a cold, rather then "free" (no matter whether of Why https://greenhomesgrant.car.blog/2025/07/20/solar-energy-grants-uk-government-support-for-greener-homes/