#Vaccineswork Here is an antivax-astronomy crossover. When Halley's comet was coming back to Earth, cyanogen was discovered in its tail, along with the knowledge that Earth was going to pass through. There was great consternation that we were going to get cyanogen poisoning. 
People capitalized on the opportunity to sell cyanogen protection kits, pills, and gas masks, all the while - forgetting a fundamental principle of physics known as density. That's 3.75$ per pill, in US $ in 2023 approximately. #astronomy #charlatan #ScienceTwitter
While it is true that concentrated cyanogen/ cyanide is toxic, you are highly highly unlikely to get hurt by 10 molecules of cyanogen blowing past you. The dose makes the poison. The anti-comet pill dudes don't want you to know that.
This type of fearmongering happens with classical pediatric vaccines all the time. Rational people took it as an opportunity to watch a once in a lifetime opportunity.
Take home: There's always a charlatan around the next corner. More science literacy can benefit every community. Most direct benefit - your wallet will appreciate you when you ignore a charlatan.
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