Edit: Hi all, it seems like the general consensus is that this is a dangerous product. I really believed that I was making something helpful but that may not be the case. I have decided to take down the listing from Cults3D. Thank you for your feedback.
The problem is exactly that you can’t wash it. Prints have dips, bumps, and gaps, especially at the microscopic level. The perfect place for bacteria to find a home. Resin would be one thing, but filament can’t be made safe, not for food, and definitely not for medicine that goes into your lungs.