Worsening rosacea
Difficulty communicating with the hard of hearing, language learners, etc
Reduced ability to convey info via facial expressions
Altered risk appraisal
Having to stand closer or speak louder to convo partner
Psychological discomfort
Bacterial pneumonia
Cross-contamination (hand to mask, mask to hand, hand to face)
Mild negatives from uncomfortable pressure on ears
Sends a message of societal fear that there is something to be afraid of (you might consider this a positive, I don’t personally)
Encourages viewing the wearer as just a vector for disease
Increased CO2 buildup