The precise nature of the sous vide method makes the decarboxylation process almost fool-proof. While it can be a financial investment, the cost is justified if you are cooking with cannabis regularly, especially since immersion circulators can be purchased for around $100. With an immersion circulator, you can dial in a lower, exact temperature which will preserve terpenes and flavor while producing almost no smell.
Sous Vide Method step-by-step: https://www.leafly.ca/news/lifestyle/decarboxylation-101-sous-vide
