S.C. Code § 56-5-5030
It shall be unlawful for any person to attach to any motor vehicle any device to emit from the exhaust pipe or any other part of such vehicle any smoke screen, noisome gases or odors. It shall be unlawful for any person to drive upon any highway or to have in his possession any motor vehicle to which is attached or unattached or in which is transported any device or substantial part of a device, attached or unattached, used in whole or in part for any smoke screen or any noisome gases or odors. It shall be unlawful for any person to use or operate in this State any device attached to any motor vehicle so as to emit from such device any smoke screen, noisome gases or odors. Any person violating any of the foregoing provisions of this section shall be guilty of a misdemeanor and upon conviction shall be imprisoned for not less than six months nor more than two years or fined not less than two hundred dollars nor more than five hundred dollars, in the discretion of the court, and his driver's license shall be forthwith revoked for a period of two years.
Any motor vehicle possessed or operated by any person in violation of this section shall be forfeited to the county in which such conviction is had. But the rights of innocent owners of mortgages shall be protected. Any such motor vehicle so forfeited may be redeemed by the owner upon the payment to the county treasurer of a sum of money agreed upon by the governing body and the sheriff of such county.
S.C. Code § 56-5-5030