How to wash this puffer jacket?

Hello! So I've been wearing this puff jacket this winter, and it kinda smells.

How do I wash it properly in the washing machine? I'm scared that the puff will go away.

https://preview.redd.it/1t335zo2bm9e1.png?width=921&format=png&auto=webp&s=b4612e71e9e2b7734996f5910510dc4148d966ad

https://preview.redd.it/5c5lj7fhxm9e1.png?width=3024&format=png&auto=webp&s=0758cd803548dec2fd4214e90ba25b135c9ea7be