If a patient has dizziness when he smells smoke, the following causes should be taken into account: 1. The patient’s physique is related, if the patient is usually weak, or if the nerves are more sensitive, the patient is prone to dizziness when he smells smoke. 2. 3, if the concentration of smoke in the air of patients is relatively large, will inevitably cause a reduction in oxygen content, it is easy to lead to a lack of blood supply to the brain, brain tissue brain cells are in a state of oxygen deprivation, so will feel dizzy.