Hey MakerWorld community! I'm a nobody around these parts, but I do have some #Safety concerns that I'd like to talk about and ask for y'all's feedback on. I own a small manufacturing business that's powered by a bunch of BL A1s. I'm thinking of adding my first TPU products to my catalog, but first I wanted to do some safety research before potentially printing something toxic on an unenclosed bed. I decided to use Gemini 2.5 Pro's Deep Research feature to get a science-based toxicological breakdown of PLA, PETG, and TPU. I was absolutely shocked by the results of recent studies, which you can see a brief overview of in the attached image. You can also view the entire report and sources here: https://g.co/gemini/share/c62274c2060e My main concern is PLA. PLA has been marketed as old reliable; the "safe" and "time-tested" filament. Consider my surprise when I learned that controlled chamber studies measured ultrafine particle emissions to be in the range of 10^9 through 10^11 particles per minute. This INSANE amount of UFPs is more than enough to cause significant reductions in cellular viability and induction of oxidative stress. Even more concerning is the seemingly unambiguous evidence that exposure to PLA UFP emissions seems to cause significant increases in a molecular marker (gamma-H2AX) that indicates the most severe form of DNA damage. I don't believe everything that I read, but this definitely concerns me. I've been printing a ton of unenclosed PLA for almost two years now, and my health has been declining since I started 3D printing (although I had believed it to be just a natural effect of aging and working too much). Now I'm extremely concerned that we've all been putting ourselves at risk due to incorrect safety claims. What do y'all make of this? Is Gemini just tripping over less-than-reputable studies? Or is this something that the community needs to take seriously?