Exposure to VOCs, typically, formaldehyde (HCHO), may cause headache, irritation, diseases, and even cancer [2].
These complaints include headache, irritation of the eyes, nose, and throat, lethargy, inability to concentrate, objectionable odors, and less frequently, nausea, dizziness, chest tightness, etc.
The following acute symptoms were assessed three times during the 24 hours measurement using a paper-based diary: headache, irritation, nervousness, dizziness, fatigue and concentration problems.
Also frequent, particularly after very high dosage, are FLS, fever, partly with chills, headache, irritation of the gastrointestinal system, pain (especially after intrapleural or intraperitoneal application), fatigue/dizziness or lassitude.
Using a paper-based diary, the following acute symptoms were taken into consideration and assessed twice during the 24-hour measurement (noon, in the evening before bedtime): headache, irritation, nervousness, dizziness, fatigue and concentration problems.
The symptoms were taken from the questionnaire of the HBSC-survey (Health behaviour in School-Aged Children) and consisted of the following ones: headache, irritation, nervousness, dizziness, fatigue, fear and sleeping problems [ 24].
Among the potential health effects with exposure are headaches; irritation to the eyes, nose and throat; and central nervous system damage.
In accordance with our previous studies [ 31], exposure to unfiltered DE increased symptoms such as headache, eye irritation, nasal irritation, unpleasant smell, throat irritation and bad taste.
General subjective symptoms of well-being (headache, eye irritation, nasal irritation, unpleasant smell, throat irritation, bad taste, nausea, cough and difficulty in breathing) were assessed by questionnaire before and every 15 minute throughout the duration of the exposure, with scores based on a modified Borg scale, ranging from no symptoms (ranked 0) to maximal symptoms (ranked 11) [ 35].
Among 29 women aged 19 27 years who were studied in an environmental chamber, headache, eye irritation, and nasal irritation were significantly worse (P < 0.05) when the women were exposed to ozone at 60 80 ppb as compared with <2 ppb (10).
Similarly comparing responses of a VOC mixture with clean air, Hudnell et al. (1992) reported significantly reduced air quality ratings and increased odor level, but they also reported increased symptoms of headache, eye irritation, drowsiness, and throat irritation.
