According to the document, using an autoclave failed.

> Authors found decontamination using an autoclave, 160C dry heat, 70% isopropyl alcohol, and soap and water (20-min soak) caused significant degradation to filtration efficiency.

https://www.youtube.com/watch?v=0QKnqD7scI4 might be of interest.

I'd think an autoclave/pressure cooker/rice steamer would have a much lower risk of melting plastic fibers in masks since they're physically limited to lower temperatures than a typical oven.

Yes, most have a low-temperature cycle and the rest can often be configured to include the option.

I think some saunas can get to that temperature.