I was told by two doctors that is the case. Without proper hygiene your mask will get covered in the Chinese death disease and you will get it if your immune system is weak.You have to wonder if the masking increases covid cases...
Laying a mask on an un sanitized surface, touching your mask before washing or sanitizing your hands will defeat the purpose.
Also if said mask does get the Chinese death disease on it via microscopic droplets and you remove it touch the droplets then touch your eyes, mouth, or nose you can get the Chinese death disease.