It has been a few days since i got brown metal fiber inserted in the hole of my tooth's extraction site when should i remove it it taste horrid!

You shouldn't: That brown metallic past was inserted in the extraction site, because you got a dry socket , which is infection of the extraction site due to dislodge meant of the blood clot that formed after the extraction , that should dissolve by itself when healing, are taking antibiotics? That also help.

Dry socket dressing: This dressing is typically changed every 24 to 48 hours, for 3 to 6 days. However, the exact frequency and duration is simply dictated by the patient's comfort requirements. Rec.: call your dentist for the dressing change or future instructions.