“…The composition of smoke itself depends on several other factors, such as the characteristics of the vegetation consumed, the efficiency of combustion, the fuel moisture content, fire temperature, and the weather conditions (e.g., Crutzen and Andreae, 1990;Levine, 1999;Ottmar et al, 2009). Despite the smoke exposure research studies carried out in the United States of America Ottmar, 2000, 2004), Australia (McMahon and Bush, 1992;Materna et al, 1993;De Vos et al, 2009;Reisen and Brown, 2009;Reisen et al, 2011), Canada (Austin, 2008) and Portugal (Miranda et al, 2005(Miranda et al, , 2010(Miranda et al, , 2012, the current state of knowledge in this field is still limited. The inherent difficulty of monitoring smoke and personal exposure levels during a fire has contributed to this scientific gap.…”