Every person reacts differently. My daughter has a violent-D-reaction immediatly with consumption, but if it is ingested through breathing--free floating flour, hay bales etc, she has a slightly delayed reaction-stomachaches for a few hours and then a few hours of vomitting. I have known someone who has no
outward reaction and another little boy who has massive behavioral changes but no intestinal changes. Not sure if this helps you
-Rachelle