Why Himesh Reshammiya never smiles in public?

Himesh Reshammiya seems to be taking pleasure in being portrayed as a serious person.

Recently, at an event, he refused to smile for pictures and when a photographer caught him smiling and chatting with one of his celebrity friends and clicked the picture, Himesh asked him to re-shoot it. Talk about strange quirks.

In Radio, Himesh's character is that of a smiling and bubbly RJ, however, he doesn't seem to want to be caught smiling in public. According to sources, throughout the time when the photographers clicked pictures, Himesh had a very serious look on his face.

The guys kept asking him to smile and even pleaded but all in vain. Later when he was smiling while talking to a friend, a photographer caught him on camera. However, Himesh asked him to take the picture again, this time with Himesh looking serious.

Himesh denied the news and claimed that when his character in Radio is that of a happy, smiling guy, why would he want to behave this way?