Elemental white phosphorus has some quite nasty dangers associated. "Phossy jaw" https://en.wikipedia.org/wiki/Phossy_jaw https://en.wikipedia.org/wiki/Phossy_

Elemental white phosphorus has some quite nasty dangers associated. "Phossy jaw" https://en.wikipedia.org/wiki/Phossy_jaw https://en.wikipedia.org/wiki/Phossy_jaw "'The Devil's element': the dark side of phosphorus" https://www.theguardian.com/science/blog/2017/oct/31/the-devils-element-the-dark-side-of-phosphorus https://www.theguardian.com/science/blog/2017/oct/31/the-dev... "White phosphorus 'burns to the bone'" https://www.dailymail.co.uk/news/article-368800/White-phosphorus-burns-bone.html https://www.dailymail.co.uk/news/article-368800/White-phosph...