Folks with peanut allergies don't have to worry that someone might be munching on the nuts during an airline flight, researchers report. It turns out there's no evidence to the commonly held belief that nut allergens can be spread through aircraft ventilation systems, a new review concluded. Advertisement "In fact, food-induced allergic reactions are around 10-100 times less common during flights than 'on the ground', perhaps because of the multiple precautions food-allergic passengers take