Gadget: portable gas sensor … did you just fart?

A gadget that fits into a person’s pocket could help unravel the environmental triggers for asthma attacks. Researchers created the portable gas sensor to study the relationship between asthma symptoms and the air a sufferer breathes.

People with asthma experience constricted airways and a tightening of the chest, symptoms that sometimes flare up into full blown attack of breathlessness. Certain allergens and pollutants are thought to worsen symptoms or to trigger severe attacks and the researchers hope to explore this connection. (link)

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