well-ventilated
certain spaces are is by
checking how
much carbon dioxide is in the
air. People exhale
carbon dioxide, which
gives you an
idea of how much of the air is
made up of other
people's breath. It won't tell
you if there
is actually a virus around
but it's a pretty
good proxy for how risky a
room can be.
Complies with CE, FCC,
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