In confined spaces (plane, TGV, office ...), air conditioning transforms the electromagnetic structure of the air. Dry and too rich in positive ions, it attacks the mucosa of the larynx which dries like parchment, the vocal cords can not vibrate anymore. Hence the extinction of voices .

What do we do when we are speechless because of the air conditioning?
- You drink more water , not icy, in small sips, as often as possible, to rehydrate the vocal cords. Be careful, alcoholic beverages or even caffeine tend to desiccate them.
- The irritating effect of positive ions with essential oils is minimized : a few drops of myrrh on a handkerchief and, for respiratory comfort, Siberian fir and eucalyptus. Breathe them every fifteen minutes.