“…These factors, in addition to very low or no income, are exacerbated by smoking (Frankish, Hwang & Quantz, 2009;Baggett, et al, 2015). Homeless adults are known to also engage in 'risky smoking practices', in which the acquisition of cigarettes leads to further health risks through cigarette sharing and smoking discarded butts (Aloot, Vredevoe & Brech, 1993;Chen Nguyen, Malesker, & Morrow, 2016;Garner & Ratschen, 2013;Tucker Shadel, Golinelli, Mullins, & Ewing, 2015). There are a number of known individual-psychological and structural-social barriers, which many vulnerable groups encounter during quit attempts (Twyman, Bonevski, Paul & Bryant, 2014).…”