Philips has voluntarily recalled millions of its CPAP and BiPAP machines because users could be breathing in foam particles and potentially cancer-causing chemicals.

Recalled sleep apnea (CPAP and BiPAP) machines from Phillips have been tied to over 500 deaths. Here’s what to know about the recalled lots.

• CPAP machines, which are used by people with sleep apnea, have some superficial similarities with ventilators, raising the question of whether they could be adapted to ease the coronavirus ...