Full-face snorkeling masks can indeed be dangerous, and that is due to the increased risk of hypercapnia (elevated CO2 levels) and hypoxia (low oxygen levels) during use, according to a recent study.

For instance, earlier this year, Decathlon/Easybreath and OCEAN REEF issued a joint statement to address the numerous pieces of information surrounding the Easybreath full-face snorkeling mask.

From a CDC and NIOSH-approved N95 mask to an industrial-grade respirator, here are the best face masks to protect yourself from smoke and smog. × Skip to main content ...

Air pollution from wildfire smoke may cause shortness of breath, but face masks can offer protection. N95 masks offer the best protection from wildfire smoke, while KN95 masks are also effective.