The National Council Against Smoking is confident that draft regulations will be passed in the next few months.
The government recently announced the draft measures, which effectively prohibit lighting up inside buildings.
If the regulations are passed, designated smoking areas in restaurants and malls will no longer be allowed.
The council's Peter Ucko said smokers adapted quickly to previous regulations.
"The first thing to recognise is that the law is very popular and people want it to work. Smokers are not unreasonable. You will never see anyone smoking in a shopping centre now."
Ucko said they were confident that draft regulations would be passed.
"The new regulations will be applied with great force."