Alison Hammond left a local news reporter giggling uncontrollably after gate crashing her live stream on social media.
Chaudhari was just introducing her live report when Hammond, 47, coughed loudly into the microphone and then cackled raucously.
The local news reporter attempted to continue by spluttering: "My name's Shivani and I'm a reporter for the Worcester News, I'm here with Alison Hammond."
But she broke down in giggles.
Hammond, 47, who has shared the clip on her own social media account said: "Hi everyone, I had a little tickle in my throat so I had to have a little cough, sorry you do your thing."
Chaudhari struggled to regain her composure and Hammond joked it was okay because there were only four people watching. But the number quickly rose to almost 60 as the This Morning presenter tried to get it the report back on track.
The former Strictly Come Dancing contestant, who is from Solihull in Birmingham, was at the Woodland View Care Home in Droitwitch to open a Macmillan coffee morning, to raise funds for the cancer support charity.
Hammond posed for selfies with residents and visitors and signed copies of her book You’ve Got To Laugh: Stories from a Life Lived to the Full.
The TV presenter - who is celebrating 20 years working on ITV daytime show This Morning - found fame on the third series of Big Brother in 2002 before launching a successful TV career.
She has appeared on numerous reality shows including I'm A Celebrity... Get Me Out Of Here!, The Great Stand Up To Cancer Bake Off and Celebs Go Dating.
Hammond has been a presenter on This Morning for 20 years, often covering showbusiness news, and last year took over as a fulltime host on Fridays and the holidays with Dermot O’Leary.
Watch: Dermot O'Leary calls Alison Hammond a b***h live on This Morning