Daily air strikes and bombs have prompted Syrian father Abdullah Mohammad to come up with a new way to help his daughter Salwa adapt to the sounds of war.

He encourages the three-year-old to simply laugh whenever she hears the sound of bombs or missiles.

In video footage obtained by Reuters, Mohammed is seen laughing with his daughter as the sound of an apparent explosion is heard in the distance.

Mohammad said that many children suffer psychological hardships and stress due to the daily air strikes.

He said that he managed to convince his daughter that these noises are similar to sounds of fireworks and that they are nothing to be scared of.

In the video, Mohammad says: "Is this a jet or a bomb?"

Salwa says: "A bomb. When it comes we will laugh."

When they hear the explosion, Salwa laughs.

"Does it make you laugh?" Mohammad asks.

"Yes it is funny," the daughter says.

Air strikes drove Mohammad and his family far from his hometown of Saraqib in northwest Syria, forcing him to live at his friend's house with his wife and daughter in Sarmada.

The 32-year-old said he hoped for a restored sense of normalcy, and a proper education for his daughter in the near future.

Backed by heavy Russian air strikes and aided by pro-Iranian militias, government forces have, since the start of the year, intensified their campaign to recapture the Aleppo countryside and parts of neighboring Idlib province in the far northwest of Syria, where anti-Assad insurgents hold their last strongholds.

United Nations High Commissioner for Human Rights Michelle Bachelet has called for the creation of humanitarian corridors in northwestern Syria, expressing horror at the Russian-backed regime offensive.

The mass displacement of civilians caused by this offensive is sparking fears of a humanitarian catastrophe.

Around 900,000 people have been forced from their homes and shelters in less than three months. The wave of displacement is the biggest since the start of the civil war nearly nine years ago, and the largest exodus of civilians since World War II.