May 27, 2019· Load the gas mask with activated charcoal. Insert a layer of cotton into the bottom of the can. Add a layer of activated charcoal on top of the cotton, then sandwich the charcoal with another layer of cotton on top. Tape cotton over the cut top of the can, then cut a small hole in the cotton.
How to Make Activated Charcoal (with Pictures) wikiHow
![whatsapp](/images/whatsapp.png)