They had them for wildfire smoke, which seems pretty reasonable. https://www.bloomberg.com/news/articles/2020-03-23/zuckerberg-donates-facebook-s-emergency-wil

They had them for wildfire smoke, which seems pretty reasonable. https://www.bloomberg.com/news/articles/2020-03-23/zuckerberg-donates-facebook-s-emergency-wildfire-mask-stash https://www.bloomberg.com/news/articles/2020-03-23/zuckerber...