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Today's Water Cooler

>> reporter: aaron collins, a self-proclaimed mask nerd, is a mechanical engineer with a background in aerosol science. >> there is significant improvement in the amount of aerosol that you'll be ix posed to when everyone is wearing an n95 and you're wearing an n95. >> it's worth reminding people why exactly they work so well. it has to do with the actual material. there are electrostatically charged fibers in here. it's not just filtering particles but attracting particles like a blanket might attract your socks in the dryer. also it works for air not potentially coming in but air potentially...

Than ever. our best bet, an n95 mask. >> if you are going to wear a mask wear the best mask possible. >> aaron collins a self-proclaimed mask nerd is a mechanical engineer with a background in aerosol science. >> there is significant improvement in the amount of aerosol that you're going to be exposed to when everyone is wearing an n95 and you're wearing an n95. >> i think it's worth reminding people why exactly they work so well. it has to do with the actual material. there are electro static clee charged fibers in here so it's not just gufiltering particles it's attracting particles. also it...

Protective mask is the n95. cnn's dr. sanjay gupta explains. >> in the united states we are being drenched with omicron, so contable jus it's caused daily cases to double in the past two weeks. like you'd put on a better raincoat in a bad storm, we need better masks more than ever. our best bet, an n95 mask. >> if you're going to wear a mask, wear the best mask possible. >> aaron collins, a self-proclaimed mask nerd, is a mechanical engineer with a background in aerosol science. >> there's significant improvement in the amount of aerosol you're going to be exposed to when everyone's wearing an...

Testing the quality of masks has made Aaron Collins a social media star and go-to source for wisdom on personal protective equipment.