Bad / Dirty
singe - To damage something just enough to cause slight harm, especially through exposure to heat or fire.
She accidentally singed her hair while cooking dinner and had to trim a bit off.
unkempt - Messy or untidy in appearance, especially referring to hair or clothing, giving a neglected impression.
His unkempt hair made it look like he had just rolled out of bed.
fumes - Gases or vapors, especially those that are toxic or unpleasant, often produced by burning or chemical reactions.
The car was releasing thick fumes from the exhaust pipe, and we could smell them in the car, making the air difficult to breathe.