气溶胶科学家称，感染冠状病毒但无症状的人的正常讲话可能会产生足够的气溶胶粒子来传播感染。尽管目前还不知道这对COVID-19的传播有多重要，但这说明严格保持社交距离的必要性。

How important is speech in transmitting coronavirus?

https://www.sciencedaily.com/releases/2020/04/200403162709.htm

Journal References:

1. Sima Asadi, Nicole Bouvier, Anthony S. Wexler, William D. Ristenpart. The coronavirus pandemic and aerosols: Does COVID-19 transmit via expiratory particles? Aerosol Science and Technology, 2020; 1 DOI: 10.1080/02786826.2020.1749229

2. Sima Asadi, Anthony S. Wexler, Christopher D. Cappa, Santiago Barreda, Nicole M. Bouvier, William D. Ristenpart. Aerosol emission and superemission during human speech increase with voice loudness. Scientific Reports, 2019; 9 (1) DOI: 10.1038/s41598-019-38808-z

3. Sima Asadi, Anthony S. Wexler, Christopher D. Cappa, Santiago Barreda, Nicole M. Bouvier, William D. Ristenpart. Effect of voicing and articulation manner on aerosol particle emission during human speech. PLOS ONE, 2020; 15 (1): e0227699 DOI: 10.1371/journal.pone.0227699