image/svg+xml Main symptoms of Carbon dioxide toxicity Central- Drowsiness- Mild narcosis - Dizziness - Confusion - Headache - Unconsciousness Muscular- Tremor Skin- Sweating Visual- Dimmed sight Auditory- Reduced hearing Heart- Increased heart rate and blood pressure Respiratory- Shortness of breath Volume % in air - 1%- 3%- 5%- 8%