A young lady lost her hearing after a passionate kiss from her boyfriend in Zhuhai, Guangdong province.
The 20-something girl reported to hospital completely deaf in her left ear soon after the painful pucker.
Dr Li, an ear specialist, from Zhuhai Second People's Hospital, said the woman's hearing would likely return to normal after about two months.
"The inner ear is connected to the mouth through a tube, whose chief function is to equalize the pressure between the two," he explained.
"In this case, the kiss reduced the pressure in the mouth, pulled the eardrum out and caused the breakdown of the ear."
While kissing is normally very safe, doctors advise people to proceed with caution.