In winter, snow falls in various different conditions. There are types of snow that tend to be cleaner and safer to eat compared to others. However, even though snow may appear clean and clear, there are still associated risks. There is a possibility that seemingly clean snow contains contaminants from the surrounding environment that are not good for bodily health.

Snow can be contaminated by air pollution, algae, bacteria from the ground, or even chemicals. When snow falls from the clouds, the complex and interlocking crystal structure can essentially capture pollutants. Therefore, it is highly likely that snow contains potentially harmful air pollutants.

Generally, people who consume snow will not get sick afterwards. However, if the snow is contaminated, the situation will be different. Contaminated snow can cause illness, infection, and even unintentional poisoning. Poisoning caused by contaminated snow can result in symptoms such as dilated pupils, dry mouth or throat, stomach pain, rapid or slow heartbeat, nausea and vomiting, as well as confusion.