My hair/scalp has a perm/burnt smell to it. i have not changed hair products recently. i wash my hair once if not twice a day. how do i fix this?

Hot curling iron? : Curling iron or high-heat blow dryer can cause burning and thus smell in the hair which may take several days to get better. Also, hair dye can do same thing--causing a chemical burn. So, minimize such for now. Use a "flowery-shampoo" then follow with hair-conditioner, towel dry only and comb through--allowing air-dry (no blow-dryer). This process should get rid of odor in about 3 days. Good luck.