the epiglottis closes over the glottis in a reflex action when food is swallowed. This prevent food from entering the respiratory system
Install air curtain
You can't let it get in when you are breathing from it, but you can get it into your tank if you don't keep your cap on your tank. Another way is from pressing the button on your second stage, so it can get into your tank.
When you inhale, the air you breathe in is cleaned by cilia in your trachea. This helps remove dust and other pathogens from the air when it is on its way to your lungs
Because the food itself will still have air in it.
pharynx
Leave it unwrapped and exposed to the air ... if you want it to just get stale, the air should be relatively dry. If you want it to get moldy, the air should be moist, and you should keep it in a dark environment.
This food will keep for about 5 days in the refrigerator. Place the food in an air tight container for the best results. This food can easily be transferred to the freezer for longer storage time.
Food preservation is a way to keep food edible and healthy.
Some air duct companies will offer a chemical biocide to clean the inside of your ducts to kill bacteria. However, there are no recommended cleaners registered in the EPA. The best way to keep them clean is prevention of water and dirt from entering them.
The pharynx
Esophogus
Chewing food thoroughly before swallowing helps to prevent food particles from entering the respiratory tract. Swallowing with a tilted head and avoiding talking or laughing with food in your mouth also reduces the risk of food going down the wrong way. If food does enter the respiratory tract, it can lead to choking or aspiration pneumonia.