Experts reveal what flies do to your food when you stand on it
Experts have revealed that most of the more than 110,000 known species of flies have no teeth, so they cannot chew solid food, as their mouth parts resemble spongy straws.
Once the fly lands on the food, it needs to release its digestive juices to liquefy it into a pre-digested soup, which can be swallowed.
In short, some flies follow a liquid diet.
In order to hold more food in their stomachs, some flies try to reduce the fluid in what they have already eaten.
Insects dry food into bubbles of vomit to dry it out a bit.
Once some of the water has evaporated, she can eat this more concentrated food.
Once the flies land, they use the receptors on the feet to identify food, according to Russia Today.
You may have noticed a fly rubbing its legs together, like a hungry customer getting ready for a meal.
This is called grooming - the fly is essentially grooming itself, and it also brushes the taste sensors on the soft bristles of its feet, to get a better idea of what's in the food it has landed on.
When a fly touches your sandwich, it probably isn't the only thing you landed on that day.
Flies often sit on gross objects, such as garbage or decaying food, that are full of microbes.
Germs can take flight, and if the fly stays long enough, it may jump to your meal.
This is much more dangerous than her saliva, because some microbes can cause diseases, such as cholera and typhoid.
However, if the fly does not stay longer than a few seconds, the chances of microbe transmission are low, and your food may be fine.
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