Why stores need to pay more attention to the air we breathe

During the coronavirus pandemic, supermarkets and retail stores have added a variety of safety features. Workers have been required to mask up and, more recently, most customers too. But most have yet to tackle what could be another important safety measure — changes to the systems that keep the stores hot and cold, and that can potentially recirculate air carrying the virus can potentially recirculate air carrying the virus that employees and customers alike breathe.

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