How can I remove the off odor from chicken before cooking?

The text describes a specific unpleasant odor found in commercially sold chicken. This smell, distinct from rancidity, makes the chicken taste bad during cooking. The author notes that boiling releases this odor as dark scum. The author explains that the unwanted smell is likely due to poor farming conditions. In Arabic, this smell is described as "zankh" or "zafr", but English lacks a specific term. Quality free-range and organic chickens do not have this issue. Since the author lacks access to better chicken, they seek methods to eliminate the odor. The author poses the question of how to remove this off-odor before cooking. The author is confused about receiving negative votes on the post.