Mask on? Mask off? Watch, then decide for yourself.

https://www.facebook.com/watch/?v=265706771159373

Disclaimer: this is a demonstration about droplets, not about how a virus (i.e. COVID-19) behaves or transmits. As Dr. Rich David said, "We used bacteria to show where the droplets go... The bacteria show where your secretions came from... These spots on the plates we're seeing, those are colonies of thousands of millions of bacteria that have just divided enough and multipled enough that we can actually visually see them on the plate."

Brought to you by the Lopez Covid Health Support Group, from Robin VanHyning.