I would say LUNGS as when you are smoking marijuana you are usually inhaling it into the lungs
Studies between the effects of marijuana on the brain are still in progress but I don’t think you will get brain cancer from smoking so I would say the lungs on this one
Firstly, I should place the patient in the recovery position. After that, I should activate the EMS, which may include giving him CPR. I should tilt their head and list their chin up, in order to open their airway. If they are still not breathing, I should call the ambulance.