There’s nothing to stop your wearing of a mask (and gloves?) while Zwifting. And you can shout that fact out to others nearby by using the messaging function. Submit an “I wear a mask while Zwifting” jersey design to HQ.
Healthcare professionals generally recommend against wearing a mask whilst exercising, especially those (a significant portion of the population) individuals affected by lung disease, such as asthma or COPD, other respiratory or heart disease, and should be evaluated by a healthcare provider before attempting exercise with any mask.
Wearing a mask while exercising impedes performance. Even the most breathable masks decrease airflow, making it harder to breathe. Professional athletes wear devices over their noses to enhance respiration, not impede? Let’s keep the virtue signalling from invading each other’s thoughts whilst engaged in pursuing personal fitness goals in the privacy of our own spaces.