- Secondhand smoke, inhaled either from someone's lit cannabis or as another has exhaled it. Lengthy exposure to down smoke in an unventilated room (also known as hotboxing) can result in a contact high, but it will not be as strong as one achieved through direct consumption. However, it's not possible to get high or test positive for THC from catching a whiff of someone's joint, or from being with a smoker in a ventilated room.
What does “Down Smoke” mean?
Example usage for Down Smoke
“I didn't have any myself, but I caught a bit of a buzz from the down smoke after my friends hot boxed the car.”