Squats - knee joints

Since I’ve started squatting recently, I can feel my right knee clicking when I walk, which makes me feel bloody squeamish.
I was thinking about taking cod liver oil to sort the problem out, but I never hear anyone mention cod liver oil specifically when they mention fish oils? I don’t take any other fish oils at the moment.
Please advise

Cod liver oil may be of some benefit; however, you have to be careful about overdoing the Vit. A and D. This is why regular fish oil would be preferable in my opinion.