Dua Lipa is a singer/songwriter known for breakout hits like “One Kiss” who rose to fame as a young teen after she began covering songs by other artists on YouTube. But yesterday she rose to attention on social media for a whole other reason when a flight attendant on United Airlines had a callous response to her sister Rina Lipa’s peanut allergy.

“I can’t believe I’m on a @united flight rn and I told the steward that my sister was severly [sic] allergic to nuts and his reply was ‘we’re not a nut free airline so if she has an epi pen she might have to use that as we can’t not serve other passengers in your section nuts’,” Lipa, 22, tweeted early Wednesday.

This dangerous interaction quickly got social media attention, and a response from the airline. According to United Airlines’ website, “United does not serve pre-packaged peanuts on our flights. However, we prepare and serve meals and snacks utilizing a variety of other ingredients including major food allergens.”

The site also says the airline: “cannot guarantee an allergen-free meal or environment on its flights” but can “pass along your request to other customers seated nearby to refrain from opening and eating any allergen-containing products they may have brought on board.”

When asked by a fan if the cabin crew even bothered to make an announcement to the plane about a passenger having a nut allergy, she responded with a resounding NO. “They didn’t!” she answered. “They just said well we won’t serve you two nuts but that’s all we can do! LOL.”

This is of course a hot-button issue because people can and often do die from peanut related allergies, and breathing it in on an airplane can be dangerous. In fact, many airlines are nut-free now. However, United Airlines is not one of those airlines.

It’s not an exaggeration that in some instances of nut allergies, someone can have a reaction or die if someone nearby is eating them. In fact, a woman was in the news not too long ago for kissing her boyfriend after he had a peanut butter sandwich. That woman had a severe allergy and later died, from a kiss.

“Passenger safety is our top priority. We can’t guarantee an allergen-free environment but we work to address allergy concerns onboard i.e. we don’t serve pre-packaged peanuts,” United Airlines tweeted in response. “We want to address your concerns so let’s connect when you land. We’ll contact our in-flight crew too.”

Twitter is still involved in an ongoing conversation on this that shows, this is an issue that others have dealt with before.