A study from China found that people can get COVID-19 from dining out in a restaurant with poor ventilation. Researchers found that over two weeks, 10 people developed COVID-19 from dining in proximity to an individual from Wuhan who was infected with COVID-19.
Most Likely Culprit: Ventilation
"We conclude that in this outbreak, droplet transmission was prompted by air-conditioned ventilation. The key factor for infection was the direction of the airflow."
1. It happens
At least one study has found that individuals can pass COVID-19 to other individuals sitting at nearby tables.
2. Ventilation Matters
Ventilation systems may play a role in circulating the virus. The diners at the restaurant who got infected sat at tables that underneath a strong air conditioner that "blew" particles over.
Generally, COVID-19 viral particles cannot travel too far. Without a strong air conditioner, it's unlikely that viral particles can travel more than 1 meter.