It's not going to be significantly unsafe. It'll shed more microplastics and is more likely to grow mold due to the surface texture, but if you're inhaling through the whistle you're using it very wrong.

That said, an injection molded whistle can be bought by the thousand for a few cents each.

Polylactic Acid (aka PLA) is a protein found in milk and corn. PLA filament is made from fermented corn starch.

If you would rather invest in a quality whistle for the one that goes in your own mouth, I recommend an ACME Thunderer.

As used by gym teachers and drum majors, (not Wile E. Coyote) they have a satisfying roll of authority.

The biggest concern with these come from the fact that it's hard to decontaminate 3d printed stuff due to the texture, as far as I can tell? PLA, and PETG are food safe, but 3d printing does leave a texture that's hard to fully clean, which can cause problems over time.

For microplastics: You're getting a lot from a lot of sources, and as with anything it's an "Is the risk worth the benefit" situation

Haha, funny you should say that, I've been linking this to people but taking the tracking portion out of the URL as I always do, I think that's pretty common amongst us lot :-D

I'd say oopsie, but I dunno, articles like these should probably be free without needing special URL parameters. Not everything of course, but vital public safety announcements like this.

...that's not what happened when I clicked it. I guess you have to have your anti-tracking disabled?

(side note: I hate the phrase "gift link". It's not a gift, it's a promo, as evidenced by the number of blatant marketing agency accounts posting them on social media.)