sanmitsu
さんみつ
three Cs
Note
3密 (San-mitsu - the 3Cs) refer to the three words, 密集 (misshuu - crowded places), 密接 (missetsu - close contact setting), and 密閉 (mippei - closed spaces), using the kanji 密 (mitsu - close).
Example
さんみつを さけて、こうどうして ください。
Avoid the 3Cs and act accordingly.