Babies kick up dust storm which they breathe in as they crawl

When babies crawl they "kick up" a dust storm of dirt, skin cells, bacteria, pollen, and fungal spores which they breathe in, a study found

And because they are so close to the floor they inhale four times as much as when an adult walks across the same surface, with carpets and rugs they worst for the "dust smog."

But while this cloud of dust and dirt may sound alarming, experts reassured parents it was not necessarily a bad thing as it could help infants build up defences against asthma and allergies.