6 ms·
High CO2 levels is not only a problematic itself but an indicator of poor air circulation. You are breathing in other's expelled air. Catching/ spreading a vir
by ReGenGen 5y ago
High CO2 levels is not only a problematic itself but an indicator of poor air circulation. You are breathing in other's expelled air. Catching/ spreading a virus like SARS‑CoV‑2, flu measles is an obvious "ill health" effect.