Daily blog: It’s January 26th, 2021, and I have a question for you.
Most hikers use a Sawyer water filter to protect themselves from harmful bacteria. But, it can not filter out a virus.
So, why don’t they just use a mask as a filter?

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Daily blog: It’s January 26th, 2021, and I have a question for you.
Most hikers use a Sawyer water filter to protect themselves from harmful bacteria. But, it can not filter out a virus.
So, why don’t they just use a mask as a filter?