Utah – The selection of drinks on board an aircraft depends on the airline. But not every refreshment is totally safe to consume, as one flight attendant reveals!

Kat Kamalani not only works as a flight attendant for an American airline company, she's also quite popular on TikTok.

In her latest video, she shares some important information passengers should keep in mind while on board – especially when it comes to their beverage choices.

"Rule number one: never consume any liquid that is not in a can or a bottle," Kamalani clarifies.

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The reason for this is somewhat unappetizing: according to the influencer, the water tanks are almost never cleaned, and if so, then only cursorily.

That's why travelers should also avoid coffee or tea, which come from the same water tanks: "The whole machine is never cleaned, and they're by the lavatories."

But what about mothers on board with their newborns? The flight attendant has a tip for them, too.

To dissolve the milk powder, she first recommends using cold water from a plastic bottle, which can then be placed in a cup of hot water to warm it up.

On the video platform, Kamalani's video garnered more than 1.7 million likes. However, her advice was met with a mixed response from users.

While some users found the clip extremely helpful, others had some pointed criticism for the flight attendant.

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"Why don't y'all just clean them lol" one user asked, while another said the flight attendant should have made a case to her company long ago to clean the water tanks regularly.

A few more users reported that they themselves work for an airline and that Kamalani's claims don't apply to all companies.

In the end, though, it's probably best to stick to Kamalani's advice. Better safe than sorry!