40mm gost BDSM scent filter

thingiverse

I was searching for a gas mask filter that could be opened and filled with whatever odor I wanted, forcing the wearer to smell its contents. It took some effort to clean up the modeling errors I made when modifying it. The parts fit somewhat loosely at first, but after sanding and applying multiple layers of paint, they fit together securely enough. In the future, you may want to figure out how to add threads so that the two halves can be screwed together tightly without any issues. I also encountered some obstructions in a few of the air holes on the bottom. It's likely that you'll need to use a needle file or something similar to ensure all those holes are clear. I managed to get them unblocked with a couple of hex keys since I didn't have access to a needle file.