IF YOU’VE ever snuggled under a blanket on a plane this story is about to gross you out.

Passenger Nicole Byer has claimed she opened her Delta airlines blanket on a recent flight and found a poo inside.

The airline are now investigating the incident after the American comedian tweeted a picture of the faeces she allegedly found, The Sun reported.

She wrote: “Dear @Delta the grossest thing happened on my flight. I opened my blanket & there was a literal piece of s**t. How does that happen?”

As if that wasn’t bad enough, she claimed the offending blanket came out of a plastic wrapper — which suggested the item had been folded and returned to the bag, even though it clearly hadn’t been cleaned.

Dear @Delta the grossest thing happened on my flight. I opened my blanket & there was a literal piece of shit. How does that happen? pic.twitter.com/D0rtJXJgL9 — nicole byer (@nicolebyer) March 16, 2017

Nicole tweeted: “I mean what a gross customer to s**t in a blanket … but truly how did an employee just fold it up and put it in a bag?”

She explained the poor quality of the photo, saying: “I would have taken a better picture of the crusty s**t. But it was crusty s**t and I didn’t care to get close to it again.”

Delta initially responded to someone else’s tweet saying; “Appreciate you calling it to our attention. Please reach out to the FA on-board for assistance. “

But Nicole replied: “Are you kidding? Of course I told the flight attendant. I’m emotionally scarred and this is all you ask? THERE WAS S**T IN MY BLANKET!”

She added: “I guess now I’ll be cold on all my flights because I can never use a blanket again BC A LITERAL PIECE OF S**T WAS IN MY LAST BLANKET”.

She later said a flight attendant “confirmed there was indeed s**t in the blanket.”

.@Delta honestly I'm shook to my core. This shitty blanket situation might make me switch airlines. I mean truly 😭😔😩👹💩 — nicole byer (@nicolebyer) March 16, 2017

Here's the @delta shit blanket update. My ticket will be refunded and I'll get 50,000 miles and 600 delta dollars and they are... — nicole byer (@nicolebyer) March 17, 2017

Not everyone believed the entertainer, with one tweet calling her a “liar.”

In a statement released shortly afterwards, Delta Air Lines spokesman Brian Kruse said the airline was taking the complaint very seriously, but could not say if Byer’s claim had been verified.

He added: “We are in direct contact with her, we’re working with her and we’re investigating the situation. We’re still working to find more information.”

However, she later tweeted that the airline has now apologised and refunded her ticket as well as giving her 50,000 free airmiles and vouchers.

We have contacted Delta for comment.

This article originally appeared on The Sun and was reproduced with permission.