'Tap water is safe for drinking, but not for irrigating your nose.'

[link to www.dailymail.co.uk]
wtf i dont get how this could happen

Louisiana's state health department issued a warning about neti pots - which look like mini watering cans, that are used by pouring salty water through one nostril.
It follows two recent deaths - a 51-year-old woman and a 20-year-old man from the 'brain-eating amoeba' Naegleria fowleri.