dont drink it and you will be fine.I consider my puffy as something that shouldn't face wet conditions, though that could be tougher with their pants.
To answer your question, I'd be concerned about buying a bottle of your traditional DWR which has typically contained bioaccumulating PFAS known to have adverse health effects. Looks like Nikwax has been working on a safer solution that may not be available until the 2025 season: https://paddlingmag.com/paddling-bu...ry-applied-dwr-for-synthetic-outdoor-fabrics/