Eerie mist fills airplane cabin

This footage shows eerie mist flooding an airplane cabin.<br /><br />Passengers were seated on a Spring Airlines flight from Guangzhou to Hangzhou in China when the incident unfolded.<br /><br />The smoke-like substance can be seen wafting through the jet while overhead screens are playing.<br /><br />Experts say mist on flights is normal and is usually caused by the air conditioning being turned on, which causes a large drop in cabin pressure.<br /><br />Air humidity present in the air then condensates into water droplets - and appears as similar to mist, fog and clouds.<br /><br />The video was shot on May 6.