The ACCC (Australian Competitor & Consumer Commission) has published the following recommendations on Blind and Curtain Cord Safety on the Product Safety Australia website...
Blinds and curtains with long, unsecured cords are a strangulation hazard for children. Make sure you buy blinds and curtains with safe design features and that all long cords are secured.
Blinds, curtains and other window coverings are often operated using long cords.
Blind and curtain cords can present a strangulation hazard to children, as they may become entangled in them while trying to use, or play around window coverings. Even with raised coverings, children can climb onto window sills or furniture and access cords. Cords can also strangle infants sleeping or playing in cots placed near windows where cords are within reach or hanging into cots.
Young children often like to climb onto furniture to look out the window. If they can reach the cords, they may quickly become entangled in them, lose their footing and suffer strangulation or serious injuries.
Accidental strangulation can happen very quickly, so never leave children alone in these rooms, even for a short while.
Source: Product Safety Australia