Ventilation requirements for cigarette smoke.

The study evaluated the strength of tobacco smoke odour by sense of smell. Similar tests were done for other irritants in tobacco smoke. Concludes that an outside air supply of 35 to 40 cfm per smoker is required to remove objectionable odours of fresh cigarette smoke. Also concludes that there in no way to ascertain whether the ventilation requirements for controlling smoke, odour and irritation effects are adequate to protect a non-smoker from possible effects of nicotine and other poisonous elements of smoke of unknown toxicological thresholds.