This post talks about various testing methods for checking the effectiveness of your homemade face masks. The purpose of these masks is to reduce the distance your breath travels to infect others.
Publisher: The Conversation | Author: Simon Kolstoe
This post talks about various testing methods for checking the effectiveness of your homemade face masks. The purpose of these masks is to reduce the distance your breath travels to infect others.
Publisher: The Conversation | Author: Simon Kolstoe