Niall Horan and Olly Murs complain as mouth ulcers sweep celeb land, but who is next?!

We're starting to fear that there might be a bit of a problem in celeb land after both Olly Murs and Niall Horan have complained of mouth ulcers.

Niall and Olly were first but who is next?! Copyright: [wenn]

Is there a mouth ulcer endemic underway? And just who have these boys been kissing?

We demand answers!

Just observe the omg! evidence...

Niall tweeted: "The awkward moment when I call bonjela -bon jovi , " liam I need t get bonjovi for the lip"

See also: [VIDEO! Olly Murs takes over omg!]

See also: [YOU interview Olly Murs]

A few days later and Olly tweets: "Hate MOUTH ULCERS... But love the taste of BONJELA #imnottheonlyone haha be honest"

See! We told you, mouth ulcers are sweeping celeb land!

Plus it means there is definitely a new celeb craze emerging: bonjela!

What next? One Direction start sending signed bonjela tubes to fans? Olly Murs becomes the face of Bonjela and stars in new TV ad?

We dread to think but can't help but worry: just WHO next?

Could this be the most worrying celeb trend since onsies got into fashion?

We're scared, very scared.

Niall and Alex both are bang on the 'M' trend! Copyright: [Twitter/Alexandra Burke]

Talking of celeb crazes, since the Olympics it seems that everyone and their celeb nan is doing the Mo Farrah 'M'.

Last week it was Girls Aloud — this week it's Alexandra Burke and Niall Horan!

That boy really is a celeb trend setter isn't he?!