As VOCs concentrations measured indoors typically exceed those outdoors [14], it is crucial to keep in mind the potential health risk consequences of indoor exposure to VOCs [15; 16], since people in developed countries in the 21 st century spend a considerable part (approximately 90%) of their lifetime indoors. Additionally, in certain conditions, inhabitants of poorly ventilated buildings are more prone to suffer from \"sick building syndrome\" (SBS) [17], which is a phenomenon characterized by various symptoms such as headache; eye, nose, or throat irritations; dry cough; allergy reactions; dry and itching skin; nonspecific hypersensitivity; insomnia; dizziness and nausea or difficulty in concentrating; and tiredness [18]. The intense odors may have a negative psychological influence as well [19]. Moreover, [PERSON] et al. [20] describe the vulnerability of the liver, [PERSON] [21] links humans' exposure to VOCs with kidneys regression, and the study of [PERSON] et al. [22] brings out the harmful effect of VOCs exposure on male and female lungs function. In interiors, VOCs are primarily emitted from indoor sources such as building materials, parquets, particle boards, oriented strand boards, plywood, furniture containing formaldehyde-based resins [2; 23; 24; 25] from finishes, including surface materials such as polyvinyl chloride (PVC)/vinyl or linoleum, glues, paints, and floor coverings (Figure 1), and from consumer products such as cleaning products, personal care products, fragrances, and air fresheners [1; 26; 27; 28; 29]. The results reported by [PERSON] [30] indicate that wood-rotting fungi may be also a contributory factor in \"sick building syndrome\", since most houses could be expected to contain VOCs emitted from fungi from various parts of a building (e.g., from behind paneling or skirting boards). Some of the VOCs identified from wood-rotting fungi have particularly potent odors, and some of them represent a possible health risk. Therefore, the thorough selection of building materials plays a key role in its occupants' health state [31]. In addition, VOCs release depends on the prevailing thermal and moisture conditions, the air pressure difference over the structure, the structural design and the quality of the construction work, the volume of air contained in the indoor space, the rate of production or release of the volatile compound, the rate of removal of the pollutant from the air via reaction or settling, and the rate of air exchange with the outside atmosphere [32; 33]. Considering instrumental methods used to determine the VOCs, gas chromatography-mass spectrometry (GC-MS) is commonly used to separate and identify the volatiles. For formaldehyde-hydro determination, liquid or gas chromatography is used, often after derivatization. Regarding volatiles extraction, exhaustive extraction techniques can be used for compounds concentration evaluation in  
Figure 1: Volatile organic compounds (VOCs) from wood and wood-based panels: their sources and impact. solid material, while equilibrium techniques are used to monitor compounds abundances in a defined space of air to describe their emission from solid material or to monitor indoor air quality.