In what can only be considered a looming environmental disaster, a recent study from the University of Southern Denmark has concluded that globally 129 billion disposable face masks are thrown away every month - that's 3 million a minute.
NANOPLASTICS
These masks contain potentially hazardous materials such as toxic micro- and nanoplastics and might also be carriers for other toxicants in the environment.
WORSE THAN PLASTIC BAGS OR BOTTLES
According to the study, the disposable masks degrade much quicker than plastic bags releasing microsized plastic fibers easier and faster into the environment, freshwater systems and oceans.

TOXINS
Disposable masks may carry heavy metals and pathogenic micro-organisms which will also be released as the masks degrade, potentially impacting food chain safety.
NO RECYCLING
There are no mandated or even voluntary recycling of disposable masks. That means 100% end up in landfill and a great deal end up in waterways and the oceans impacting on marine life.
ALTERNATIVES?
Yes of course! Natural, organic cotton reusable masks.
FURTHER READING
You can find the study here...
https://link.springer.com/article/10.1007/s11783-021-1413-7