Crack, when smoked, is often described as smelling like burnt plastic, rubber, chemicals, or sometimes paint or gasoline. Unsmoked crack may have little or no noticeable odor.

What people notice

  • A sharp, acrid chemical smell.
  • A burnt, synthetic odor.
  • A lingering smell that can stick to clothes, rooms, or furniture after use.

Important context

The exact smell can vary depending on how it was made and what impurities or additives are present. If you’re asking because you suspect drug use in a home or car, a strong burnt-plastic smell is one possible sign, but it is not proof on its own.

Safety note

If someone may have been exposed to crack smoke and is having chest pain, trouble breathing, severe anxiety, confusion, or loss of consciousness, seek urgent medical help right away.