Research has long shown that criminalising otherwise law-abiding citizens for their drug use is no deterrent. It only damages their life chances, in a discriminatory fashion.
Whipping cream canisters contain nitrous oxide, which some people use to get high. But going ahead with a proposal before the TGA to ban them altogether would be an overreaction.
The British think tank Transform has given Canada high marks for its cannabis legalization efforts. But it also delved into areas that still need work, including social equity issues like amnesty.