Sneezing powder
From Infogalactic: the planetary knowledge core
Sneezing powder refers to a group of powders or powder-like substances that induce sneezing when someone is exposed to them. This is usually done as a practical joke or prank to an unsuspecting victim.
Sneezing powders containing Veratrum album alkaloids have been linked to poisoning, including upset stomach, fainting, slowed heart rate and low blood pressure. [1] Children are especially vulnerable. [2]
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