. Flour is documented as a causal agent that can induce a type of occupational asthma, often called baker’s asthma (Baur 1999; Brisman et al. 2000; Houba et al. 1998b; INBP 2005; Jeffrey et al. 1999; Kakooei and Marioryad 2005; Karpinski 2003; McDonald et al. 2000; van Tongeren et al. 2009).