It's going to come down to the ventilation of the space you're in regardless. We're back to square zero: improperly ventilated indoor spaces are a huge public health concern, even beyond covid.
Ventilation is certainly important and I'd like to see much greater focus on this. But, to state the obvious, we're not going to improve the ventilation of existing spaces overnight, unfortunately, so we also need to figure out how to mitigate risk in the meantime.
