ODD socks have been displayed loud and proud for the one in two Australians who experience a mental health illness at some point in their lives.

The Toowoomba Clubhouse pulled on its odd socks to help stomp out the stigma attached to mental illness for Odd Socks Day.

Toowoomba Clubhouse CEO Jo Sheppard said the national initiative symbolised the fact that anyone could have an odd day.

"The Toowoomba Clubhouse works with people that have mental health challenges, varying levels of it," Ms Sheppard said.

"But none of us are likely to be not affected by mental health in some way.

"So we think it is really important to raise awareness so that people are more aware of the people around them in their work place or their families and they feel more skilled to help and support people."

Ms Sheppard said this was the first year the Clubhouse had participated in Odd Socks Day, holding a lunch and odd socks competition. Next year they plan to hold a bigger event.

Odd Socks Day also marks the start of Mental Health Week. For more information go to toowoombaclubhouse.org.au.