Hello,
Pain killers do not have any such type of effects. Since your hair is smelling metallic, take care of your hygiene. Wash your hair 2-3 times daily with
Selsun shampoo or any medicated shampoo. Keep your
scalp clean.
The metallic smell can emanate when your scalp is exposed to smoke or burning industrial waste or chemicals,
allergy to some food stuff (mineral supplements, high
protein shakes, red meat-beaf, junk food), addictions (
smoking, drugs, etc).
The oil & sweat excreted by the skin nourishes bacteria on your skin causing bad metallic odor.
Your skin disposes of waste products, eat more of fruits, veggies, yogurt, less of onions & garlic.
Hope I have answered your query. Let me know if I can assist you further.
Regards,
Dr. Nupur K, General & Family Physician