Whenever someone cracks a peanut, tears open a package of powered milk, kneads bread dough, or fries a fish, allergens may take towards the air and travel across an area where unsuspecting food allergy sufferers can inhale them. Although these situations commonly occur, serious reactions from airborne exposure aren't terribly common, though they are able to and do happen. The secret to coping with such situations would be to get the skills for differentiating between situations that pose a real risk and people that pose little if any risk.
The chance of experiencing an airborne reaction varies depending on the power of food protein in the air. Which relies upon the way the meals are handled, how close you're towards the food being handled, and just how confined an area you're in. With peanuts, for instance, you face four amounts of risk.
Level-one risks arise when someone is eating a food alongside you that offers the allergen included in its ingredient; for instance, a peanut butter or grilled cheese sandwich. In this instance, the danger that food protein becomes airborne and results in a reaction, especially a serious reaction, is very low.
Despite the fact that you can smell the peanut or cheese, the scent comes from aromatic oils and it has absolutely nothing to do using the protein that triggers a reaction. Insufficient peanut or milk protein hails from that sandwich to place you at any real risk, and reactions using this type of exposure are rare, even if you are in closeness towards the sandwich eater.
One step-up from level one are level-two risks; for instance, you're with an airplane where your fellow passengers are tearing to their tiny bags of peanuts. In this example, small quantities of peanut dust, which does retain the protein, can become airborne, especially because the bags of peanuts are being opened in the negative-pressure environment of the airplane cabin.
The danger may further increase because you're in closeness towards the peanuts, you're in very confined space, and also the air's re-circulating, potentially making matters worse. Severe reactions have occurred on airplanes that seemed to be for this reason airborne exposure, however, you need to place the risk in perspective:
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