What is the correct procedure for disposing of a damaged or expired airbag module in Malaysia?

1. Throw it directly into a standard metal recycling bin with household trash
2. Deploy the airbag safely using a deployment tool at a designated area, then dispose of the module according to environmental standards
3. Soak the module in a bucket of engine oil to neutralize the sodium azide propellant
4. Bury the undeployed module in wet soil behind the workshop yard