Hillary Clinton was not wearing an earpiece on Wednesday evening during a forum that was broadcast on NBC, her aides say.

An enhanced photo of Clinton on a website that showed something glistening in left her ear was not a transmitting device. It was an optical illusion created by a camera flash or TV lights, spokesman Nick Merrill said.

Another senior aide to Clinton's campaign also confirmed to Fox News that Clinton wasn't coached through the terse national security discussion with Today show host Matt Lauer.

Clinton also fielded questions from the audience during the 30-minute, live event.

Hillary Clinton's aides denied that she was wearing an earpiece on Wednesday evening during a forum that was broadcast on NBC (pictured)

An enhanced photo of Clinton on a website that showed something glistening in left her ear

The allegation that Clinton was getting a little extra help came from the 'True Pundit' blog.

It claimed Clinton was 'sporting a mini earbud wired to receive stealth communications from her campaign handlers.

As Clinton was taking questions a 'quiet buzz started circulating in New York law enforcement circles about Hillary's left ear'.

'NYPD sources involved with the NBC forum's security detail' reportedly told True Pundit that the candidate was wearing an 'inductive earpiece'.

The website pointed out that the micro-sized flesh-colored earpieces, like the one it says Clinton was wearing, are 'easily concealed' and have a range of 300 Hz to 4KHz.

As Clinton was taking questions a ‘quiet buzz started circulating in New York law enforcement circles about Hillary’s left ear

If Clinton was wearing one, she would have been able to take cues from an aide in another room, or a nearby building.

Except that she wasn't, senior campaign aides said.

Conspiracy theories about Clinton's health have been running rampant on conservative sites for the past month.