Annoyance and irritation by passive smoking

Area of Science:

• Environmental Health
• Occupational Health
• Toxicology

Background:

• Environmental tobacco smoke (ETS) significantly contributes to indoor air pollution, with 30-70% of carbon monoxide, nitrogen oxide, and particulate matter originating from tobacco.
• Workplace exposure to ETS affects a substantial portion of employees, causing disturbance, annoyance, and eye irritation.
• Subjective irritations (eyes, nose, throat) and physiological responses like increased eye blink rate correlate with ETS concentration and exposure duration.

Purpose of the Study:

• To investigate the acute irritating and annoying effects of environmental tobacco smoke.
• To determine the tolerable limits of ETS exposure for healthy individuals.
• To establish necessary countermeasures for passive smokers.

Main Methods:

• Field and laboratory studies were conducted.
• Concentrations of key smoke components (carbon monoxide, nitrogen oxide, particulate matter) in indoor air were measured.
• Subjective irritation symptoms and eye blink rates were assessed in relation to smoke exposure.

Main Results:

• ETS is a major source of indoor air pollutants, impacting workplace air quality.
• 25-40% of employees experience disturbance or annoyance, and 25% report eye irritation due to ETS.
• Irritation is primarily linked to the particulate phase, while annoyance is mainly from the gas phase of ETS.
• Healthy individuals can tolerate ETS up to 1.5-2.0 ppm carbon monoxide.

Conclusions:

• Ventilation is crucial to maintain indoor air quality and protect passive smokers from ETS.
• A fresh air supply of 33 m3/hour/cigarette is needed to stay below the 2.0 ppm CO threshold.
• Individuals with pre-existing respiratory conditions (asthma, chronic bronchitis), allergies, and children are particularly vulnerable to ETS effects.